What is the slope-intercept equation for the cost of a sub at Fred's Sub Shop?

A) y=2x
B) y=10x
C) y= 5x
D) y=5x+2

To determine the slope-intercept equation for the cost of a sub at Fred's Sub Shop, we need to know the relationship between the cost of the sub (y) and the number of subs purchased (x).

Let's say the cost of one sub is $5. In this case, the equation would be y = 5x, also represented as C(x) = 5x. This means that the cost of one sub is $5, two subs would be $10, three subs would be $15, and so on.

Therefore, the slope-intercept equation for the cost of a sub at Fred's Sub Shop is:

C(x) = 5x

Therefore, the correct answer is:

C) y = 5x