Question

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

Answer 1

the rate is equal to
`3.2(inches)/(week)`

Explanation:

we have

`h-15=3.2t`

where

h is the height of a plant

t is the number of weeks after planting

so

Find the rate at which the plant's height is increasing

we know that

The given formula is a linear equation

The rate is equal to the slope of the linear equation

Isolate the variable h

`h=3.2t+15`

the slope is equal to
`m=3.2(inches)/(week)`

therefore

the rate is equal to
`3.2(inches)/(week)`