A small business is considering hiring a new sales representative (sales rep) to market its product in a nearby city. Two pay scales are under consideration. Pay scale 1: Pay the sales rep a base yearly salary of $15,000 plus a commission of 6% of total yearly sales. Pay scale 2: Pay the sales rep a base yearly salary of $18,000 plus a commission of 4% of total yearly sales. (a) For each of the pay scales above, use a formula to express the total yearly earnings for the sales rep as a function of total yearly sales s. (Give percents in decimal form.) pay scale 1    T1(s) =         pay scale 2    T2(s) =         (b) What amount of total yearly sales would result in the same total yearly earnings for the sales rep no matter which of the two pay scales is used? $

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