A bookstore is selling books for $10 each. The graph below shows the relationship between the number of books, x, the store sold and the total amount of money, y, paid from the book sales. Write an equation that represents the relationship between the number of books sold and the total amount paid, in dollars.

step-by-step explanation:

see attached

step-by-step explanation:

given the function as;

write the equation replacing f(x) with y

form   and fill a table containing values of y with corresponding values of x

you can take a range for   values of x as -3≤x≤3

solving for x=-3

for x=-2

repeat the same procedure to get the values of y for the remaining ,x=-1 to x=3

plot the values of y against values   of x and obtain the following graph