Question

Two friends plant a tree and record the height of the tree each following year to track its growth. The data can be represented by the linear model y = 4.3z +3.25, where y represents the height of the tree, in feet, and z represents the number of years since it was planted.

Based on the linear model, what is the expected height of the tree in 8 years?

3.25
4.3
31.2
37.65

Answer 1

The answer is D. 37.65

Answer 2

D.) 37.65

Explanation:

I know that 8 is an input based on this word problem. So, then I plug in the 8 for z and solve to find the expected height of the tree in 8 years.

y=4.3z+3.25

y=4.3(8)+3.25

y=34.4+3.25

y=37.65

In 8 years the expected height of the tree is 37.65