What form of math is this?

Step-by-step explanation:

The total cost of ordering 10 shirts can be calculated as following:
C = 4 + 12(10)
C = 4 + 120
C = 124
Answer:
A, B, C, D
Step-by-step explanation:
They All add up to 360
Answer:
I got 32.
Step-by-step explanation:
I used the Pythagorean theorem to find the lengths of the width and length. The length between (-1, 4) and (3, 3) was approximately 4 in. The distance between (-1, 4) and (-3, -4) was approximately 8 in. I then used those numbers to find the perimeter ((2*4)+(2*8))