c is the cost the store pays for the item and 0.85c is 85% price increase the store adds to the item. Which expression is equivalent to c+0.85

Given f(x)= 9x+1 and g(x)=x^3, choose the expression (f*g)(x)

What is the solution to the equation? k/6.4=8.7 2.3 5.568 15.1 55.68

Suppose you are an avid reader and are looking to save money on the cost of books instead of paying about $20 for each book, you decide to look into purchasing a kindle for $120 you can purchase e-books for about $5 each 1. find the slope-intercept equation for the cost of the hard copy of books using x to represent the number of books 2. find the slope-intercept equation for the cost of the kindle with cost of e-books using x to represent the number of books