We know that because we divide 2.32/80. We have to find out what percent the tax is of the amount paid. The answer comes to 0.029. Multiply it by 100, and you get 2.9%
For this case what we must do is a composition of functions which will be given by: m (x) = 4x - 11 n (x) = x - 10 We have then: m [n (x)] = 4 (x - 10) - 11 Rewriting the function: m [n (x)] = 4x - 40 - 11 m [n (x)] = 4x - 51 Answer: a. m [n (x)] = 4x - 51