3 - 5 TSI warm up

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?

• 32

• 28

• 24

• 33

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

• 30

• 75

• 90

• 100

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?

• 15 inches per week

• 18.2 inches per week

• 3.2 inches per week

• 48 inches per week

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?

• 15 inches

• 3.2 inches

• 18.2 inches

• 11.8 inches

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?

• Some time between 11 and 18 weeks

• Some time between 7 and 12 weeks

• Some time between 6 and 10 weeks

• Some time between 3 and 7 weeks

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?

• T= 9

• t = 3

• T = 0

• t = 0

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?

• 6000 cubic inches

• 5590

• 5573

• 5000

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 x (pi) x r^2

• 2

• 4

• 8

• 16