GED Test

GED Test practice questions, page 9 of 31, with answer review and explanations.

Question 41

Refer to the following diagram: It is necessary to find the times when the temperature is 8ֲ° F. Which of the following is the correct equation to do this? 1. 9 גˆ’ t = 8 2. 9 + t = 8 3. 9 גˆ’ t = 8 4. 9t גˆ’ t = 8

  1. 1
  2. 2
  3. 3
  4. 4

Question 42

Which of the following is the equation of the straight line joining the points on the graph corresponding to t = 2 and t = 1?

  1. T + 3t = 11
  2. T גˆ’ 3t = 1
  3. T + 11t = 3
  4. T + 3t = 1

Question 43

The following two questions relate to the sphere shown below: The formula for the volume V of the sphere = 4ֿ€r / 3. Which of the following is the closest approximation to the volume when r, the radius, is 11 inches?

  1. 6000 cubic inches
  2. 5590 cubic inches
  3. 5573 cubic inches
  4. 5000 cubic inches

Question 44

If the radius of the sphere were doubled by what factor would the surface area be enlarged? Note: The formula for the surface area S of the sphere = 4 ֳ— ֿ€ ֳ— r

  1. 2
  2. 4
  3. 8
  4. 16

Question 45

The graph below is part of the graph of the function T = (t + 1) (t גˆ’ 3) for the temperature in a refrigerator for time t hours after midday. For which set of t values is the temperature below 0?

  1. (1, 3)
  2. (גˆ’1, 3)
  3. t ג‰¥ 3
  4. t = 1