Answer:
c. 4x + 20 = 140
Step-by-step explanation:
Perimeter = 140 feet
Width = L + 10
P = 2w + 2L
P = 2(L + 10) + 2L
P = 2L + 20 + 2L
P = 4L + 20
Answer:
D
Step-by-step explanation:
Because you have to do work
Given a polynomial
and a point
, we have that

We know that our cubic function is zero at -4, 0 and 5, which means that our polynomial is a multiple of

Since this is already a cubic polynomial (it's the product of 3 polynomials with degree one), we can only adjust a multiplicative factor: our function must be

To fix the correct value for a, we impose
:

And so we must impose

So, the function we're looking for is

From the least to the greatest.
The one with the biggest size and has a negative sign is the least
-5216, -3.2, -3.12, 8
70-30=40
40 divided by 8 = 5
x ≤ 5
she can buy at the most 5 T-shirts.