Question

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

Answer 1

Answer:

the rate is equal to $3.2\frac{inches}{week}$

Step-by-step 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 $m=3.2\frac{inches}{week}$

therefore

the rate is equal to $3.2\frac{inches}{week}$

Answer 2

If you add 15 to both sides, you get h = 3.2t + 15. This is basically a slope-intercept equation, and simply from that, you can tell that the slope (the rate) is 3.2.

Hopefully this helps! :)