Question

The expression 1.5t+20 predicts the height in centimeters of a plant t days from today.

What is the predicted height of the plant 5 days from today?

(blank) cm

Answer 1

t is the number of days.

They are asking what the height will be in 5 days. Replace t with 5 in the equation:

1.5t + 20 =

1.5(5) + 20 =

7.5 + 20 =

27.5 cm