GED Math Practice Test 2

One third of the candidates for a job were 25 years old or younger. Two sevenths of the candidates were at least 50 years old. If 84 people applied for the job, how many were between 25 and 50?

Which of the following is a factor of 450 and multiple of 25?

The formula h – 15 = 3.2t gives the height h in inches of a plant t weeks after planting.

Which is the rate at which the plant’s height is increasing?

The formula h -15 = 3.2t gives the height h in inches of a plant t weeks after planting.

How high was the initial height of the shrub?

The formula h -15 = 3.2t gives the height h in inches of a plant t weeks after planting.

When was the height 31 inches?

A graph of the temperature T (degrees Fahrenheit) in a refrigerator t hours after midday.

What is the equation of the axis of symmetry of this graph?

A graph of the temperature T (degrees Fahrenheit) in a refrigerator t hours after midday.

It is necessary to find the times when the temperature is 8^o F. Which of the following is the correct equation to do this.

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

The formula for the volume V of the sphere = 4(pi)r³ / 3. Which of the following is the closest approximation to the volume when r, the radius, is 11 inches?

If the radius of the sphere were doubled by what factor would the surface area be enlarged?