Luke is building a storage building and needs to have a slab of concrete poured. He knows the contractor charges an initial cost of $95 plus an additional $3.50 per square foot of concrete. Which function can be used to determine the cost, in dollars, to pour a concrete slab with an area of x square feet?

Question

DwightH · Answer

A)	f(x) = 3.5x + 95	
B)	f(x) = 9.5x + 3.5	
C)	f(x) = 95x + 3.5	
D)	f(x) = 98.5x

dude · Answer

Well usually in these types of questions you want to look at the wording, even if you are not sure what they are talking about

When they mention $\bf per~\#$, it refers to a rate
- We know that a rate is always the number next to the variable (x)