What’s the answer need it for quiz

9 units

Step-by-step explanation:

The perimeter formula is equal to P=4b where b can be referred as the length side of that square.

We can see b=(x+3) units and Perimeter=48 units.

By substituting the given formula, we can write 48=4(x+3).

Therefore, we can write 12 = x +3 or, x = 12-3 = 9 units.

So the value of x is 9 units.

Hope it helps!

let m = monomial

let t = trinomial

so, m times t = t.

monomial times a trinomial = another trinomial.

sure i'm up for it

step-by-step explanation: