|
PREP07 Test 1
|
If the operation * is defined for all integers a and b by a*b=a+b-ab which of the following statements must be true for all integers a, b, and c ?I. a*b=b*aII. a*0=aIII. (a*b)*c=a*(b*c)
|
|
PREP07 Test 1
|
Adam and Beth each drove from Smallville to Crown City by different routes. Adam drove an an average speed of 40 miles per hour and completed the trip in 30 minutes.Beth's route was 5 miles longer, and it took her 20 minutes more than Adam to complete the trip. How many miles per hour was Beth's average speed on this trip?
|
|
PREP07 Test 1
|
A basket contains 5 apples, of which 1 is spoiled and the rest are good. If Henry is to select 2 apples from the basket simultaneously and at random, what is the probability that the 2 apples selected will include the spoiled apple?
|
|
PREP07 Test 1
|
If k is an integer and 2 < k < 8, what is the value of k ?(1) k is a factor of 30(2) k is a factor of 12.
|
|
PREP07 Test 1
|
 On the number line above, is the product of w, x, y, and z negative?(1) z is positive(2) The product of w and x is positive.
|
|
PREP07 Test 1
|
Of the 25 cars sold at a certain dealership yesterday, some had automatic transmission and some had antilock brakes. How many of the cars had automatic transmission but not antilock brakes?(1) All of the cars that had antilock brakes also had automatic transmission.(2) 2 of the cars had neither automatic transmission nor antilock brakes.
|
|
OG17 OG18
|
For each of the following projects, select Delayed if it can be inferred from the information in the tabs that the project must have experienced a delay at one or more stages. Otherwise, select Not necessarily delayed.
|
|
OG17 OG18
|
Which one of the following statements is most strongly supported by the information presented in the tabs?
|
|
OG17 OG18
|
The diagram shows a project team consisting of exactly 8 workers. Each worker is represented by a circle labeled with a capital letter. An arrow directed from one worker's circle to a second worker's circle indicates that the first worker directs project-related questions to the second worker. Each of the workers to whom no other worker directs project-related questions is an individual contributor, and each worker to whom one or more of the other workers directs project-related questions is a coordinator. For example, G (an individual contributor) directs project-related questions to E (a coordinator), but E does not direct project-related questions to G; whereas C and D (both coordinators) direct project-related questions to one another. Use each drop-down menu to create the most accurate statement about this project team based on the information provided. 10A. There are exactly individual contributors on the project team.10B. and the individual contributor who directs project-related questions to the greatest number of other workers is .
|
|
PREP07 Test 1
|
A small water pump would take 2 hours to fill an empty tank. A larger pump would take 1/2 hour to fill the same tank. How many hours would it take both pumps, working at their respective constant rates, to fill the empty tank if they began pumping at the same time?
|
|
PREP07 Test 1
|
. If in a certain population, people are born at an average rate of 9 people every 2 seconds and people die at an average rate of 3 people every 2 seconds, by approximately how many people does the population increase in 1 day?
|
|
PREP07 Test 1
|
 In the rectangular coordinate system above, the area of triangular region PQR is
|
|
PREP07 Test 1
|
Susan drove at an average speed of 30 miles per hour for the first 30 miles of a trip and then at an average speed of 60 miles per hour for the remaining 30 miles of the trip. If she made no stops during the trip, what was Susan's average speed, in miles per hour, for the entire trip?
|
|
PREP07 Test 1
|
A certain builder is selling five homes for the following prices: $157,000, $168,000,$195,000, $235,000, and $256,000. If the price of the most expensive home is increased $10,000, which of the following statements best describes the change in the mean and the median of the home prices?
|
|
PREP07 Test 1
|
 The table above shows the distribution of test scores for a group of management trainees.Which score interval contains the median of the 73 scores?
|
|
PREP07 Test 1
|
If a quality control check is made by inspecting a sample of 2 lightbulbs from a box of 12 lightbulbs, how many different samples can be chosen?
|
|
PREP07 Test 1
|
At the end of the first quarter, the share price of a certain mutual fund was 20 percent higher than it was at the beginning of the year. At the end of the second quarter, the share price was 50 percent higher than it was at the beginning of the year. What was the percent increase in the share price from the end of the first quarter to the end of the second quarter?
|
|
PREP07 Test 1
|
 In the figure above, a square is inscribed in a circle. If the area of the square region is 16,what is the area of the circular region?
|
|
PREP07 Test 1
|
A company plans to assign identification numbers to its employees. Each number is to consist of four different digits from 0 to 9, inclusive, except that the first digit cannot be 0.How many different identification numbers are possible?
|
|
PREP07 Test 1
|
 Which of the following statements can be inferred from the data above?I. the Klein family's annual income more than doubled from 1985 to 1995II. the Klein family's annual income increased by a greater amount from 1985 to 1990 than from 1990 to 1995III. the Klein family's average (arithmetic mean) annual income for the period shown was greater than $40,000.
|