Question

What is total pay if she doesn’t sell any copies What is change in total pay for each copy

Answer 1

a. If x is the number of copies Elsa sells and y represents her total pay, then, to determine her pay when she sells zero copies, let's replace "x" with zero in the provided equation and solve for y.

`\begin{gathered} y=1700+90(x) \\ y=1700+90(0) \\ y=1700+0 \\ y=1700 \end{gathered}`

Therefore, Elsa receives a total pay of $1,700 only if she doesn't sell any copies of English is Fun.

b. On the other hand, if Elsa sells a copy of English is Fun, let's say 1 copy, we can replace "x" with "1" and see how much her total pay is.

`\begin{gathered} y=1700+90x \\ y=1700+90(1) \\ y=1700+90 \\ y=1790 \end{gathered}`

Elsa receives a total pay of $1,790 if she can sell 1 copy of English is Fun.

Therefore, an additional $90 is given to Elsa whenever she sells a copy of English is fun. An increase of $90 is the change in Elsa's total pay for each copy of English is Fun she sells.