Question

Cherie works in retail and her weekly salary includes commission for the amount she sells. The equation S = 400 + 0.15cmodels the relation between her weekly salary, S, in dollars and the amount of her sales, c, in dollars. Interpret the slope ofthe equation.

Answer 1

The model of the weekly salary of Cherie is:

S(c) = 400 + 0.15c

Where S is her weekly salary, and c is the number of her sales, both in dollars.

S is a linear equation, and the generic linear equation is:

y = m*x + b, where m is the slope of the equation.

If we compare S to the generic linear equation, we see that the slope of S is 0.15. That is, for each sale, Cherie earns 0.15 dollars as commission