Skip to content
# 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?

Question:

A
Sometime between 3 and 7 weeks

Explaination

h - 15 = 3.2t gives the height of a shrub in inches after t weeks. When the height is 31 inches 31 - 15 = 3.2t

3.2t = 16

$4831_w94_h13.png$

t = 5

The height is 31 inches after 5 weeks.

Take more free practice tests for other GED topics with our ged test now!