Question

A seedling tree grows steadily at a rate of 4 cm per day. Which of the following formulas can be the one describing how the height of this tree, h (in cm), depends on the number of days that passed, d?

(A) h=4d (B) h=−4d+50 (C) h=4d+50 (D) h=4d−50

Answer 1

C) h = 4d + 50

Explanation:

The question did not include the starting height of the tree but based on the answer choices it was 50 cm. I checked and C) is the correct answer.

Answer 2

(A) h=4d

Explanation:

Given is :

A seedling tree grows steadily at a rate of 4 cm per day.

This can be simplified like- on day 1 it grows 4 cm, on day 2 it grows 8 cm, on day 3 it grows 12 cm and so on...

So, the equation that describes how the height of this tree, h (in cm), depends on the number of days that passed, d is :

h=4d (where d is number of days and 4 is the constant rate of growth)