Question

Keith applies a new brand of fertilizer to his grass. He finds that the rate at which the grass grows can be modeled by a linear function. He observes that the rate of growth is 1 centimeter every 3 days. After 18 days, he measures the height of the grass to be 8 centimeters. The initial height of the grass was centimeters tall.

Answer 1

i dont understand your question. sorry my friend.

Answer 2

The initial height of the grass was 2cm long.