Question

the number of cubic meters of mulch, m, needed to cover a garden with an area of a square meters is given by m = f(a).
cheng needed 36 cubic meters of mulch to cover his garden, which has an area of 400 square meters. express this information using function notation in terms of f.

Explanation:

Step1: Match variables to given values

We know $m = f(a)$, where $m$ is cubic meters of mulch, and $a$ is garden area in square meters. Here, $a=400$ and $m=36$.

Step2: Substitute into function notation

Replace $a$ with 400 and set the function equal to 36.

Answer:

$f(400) = 36$