Harold has been hired as a salesman. He is paid a flat rate of $375 each week and earns an additional $14.25 commission for each sale. If x represents the number of sales and y represents the total earned, which equation will help Harold determine the amount he earns in one week? (2 points) Select one: a. y = $375h - $14.25 b. y = $375h + $14.25 c. y = $14.25h + $375 d. y = $14.25h - $375