Question

Kayla is tracking the progress of her plants growth. today the plant is 8 cm high. the plant grows 2 cm per day.

a. write a linear model that represents the height of the plant after d days

b. when will the plant be at a height of 20 cm?​

Answer 1

30 cm

Explanation:

Answer 2

A. Multiply daily rate by number of days and add that to the starting height:

Height = 2d + 8

B. Set height to 20 and solve for d:

20 = 2d +8

Subtract 8 from both sides

12 = 2d

Divide both sides by 2

D = 6

It wall take 6 days.