Answer:
A) C = 2,200 + 150S
B) $7,750
Explanation:
Explanation A)
The cost to rent the trucks is a one-time fee, therefore it does not need to be assigned a variable. However, the statement "$150.00 per ton of material shipped" does need a variable since it's stated that "S represent each ton of material shipped"
So we will attach the S to the 150
C = 2,200 + 150S
Explanation B)
Now, using the same equation we made from Explanation A. We will replace S with 37.
Why? Since S represents each ton of material, we are given 37 tons. We need to replace the S to actually calculate a value. Think of all the letters as just a placeholder until we actually need it.
C = 2,200 + 150(37)
C = 7,750