Question

1.
function ( h ) gives the height of a plant, in centimeters, when it is ( d ) days old.
which statement best represents the meaning of the equation ( h(12) = 45 )?

a. the plant grows 45 centimeters in 12 days.
b. the plant is 12 centimeters tall after 45 days.
c. the plant is 45 centimeters tall when it is 12 days old.
d. the plant has been 45 centimeters tall for 12 days.

a
b
c
d

Explanation:

The function \( h(d) \) defines height \( h \) as a function of days old \( d \). For \( h(12)=45 \), the input is 12 days, and the output is the height in centimeters. This directly matches the description that the plant's height is 45 cm at 12 days old.

Answer:

C. The plant is 45 centimeters tall when it is 12 days old.