AASA 7th Grade Math 3

Question 1

What is the constant of proportionality in the equation y = 4.5x?

Accepted Answer

4.5

Answer

1

Answer

x

Answer

y

Question 2

A triangular prism has a base area of 15 square inches and a height of 8 inches. What is its volume?

Accepted Answer

120 cubic inches

Answer

23 cubic inches

Answer

60 cubic inches

Answer

240 cubic inches

Question 3

Which of the following is an equivalent expression to −2(3x − 4) + 5x?

Accepted Answer

−x + 8

Answer

−11x + 8

Answer

11x − 8

Answer

−x − 8

Question 4

A population of bacteria doubles every 3 hours. If the initial population is 200, how many bacteria are there after 9 hours?

Accepted Answer

1,600

Answer

800

Answer

600

Answer

3,200

Question 5

A random sample of 50 students found that 30 prefer basketball over soccer. If the school has 400 students total, how many would you predict prefer basketball?

Accepted Answer

240

Answer

300

Answer

200

Answer

160

Question 6

What is the scale factor if a model car is 5 inches long and the actual car is 15 feet long?

Accepted Answer

1:36

Answer

1:3

Answer

5:15

Answer

1:180