The final cost of a bookstore purchase with a $5 coupon in a state that charges 8% sales tax is given by the expression. the variable x represents the amount of the purchase before the sales tax and the coupon is applied.

1.08(x−5)

what does (x−5) represent?

a. the rate at which the total cost increases

b. the total charge before applying sales tax

c. the total charge after tax

d. the cost before applying the coupon

Ineed with number 6 , explain how to get 1978

Sketch the region enclosed by the given curves. decide whether to integrate with respect to x or y. draw a typical approximating rectangle and label its height and width. y= 5x, y=7x^2then find the area s of the region.

A. plot the data for the functions f(x) and g(x) on a grid and connect the points. x -2 -1 0 1 2 f(x) 1/9 1/3 1 3 9 x -2 -1 0 1 2 g(x) -4 -2 0 2 4 b. which function could be described as exponential and which as linear? explain. c. if the functions continue with the same pattern, will the function values ever be equal? if so, give estimates for the value of x that will make the function values equals. if not, explain why the function values will never be equal.