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A sales clerk's weekly salary is $275 plus 5% of her total week's sales. Find a function P(x) for her pay (in dollars) for a week in which she sold x dollars of merchandise. P (X ) = dollars Need Help? Read It 4. [-/2 Points] DETAILS BERRAPCALC7 1.3.079. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A company that produces tracking devices for computer disk drives finds that if it produces x devices per week, its costs will be C(x) = 180x + 16,000 and its revenue will be R(x) = -2x2 + 600x (both in dollars). (a) Find the company's break-even points. (Enter your answers as a comma-separated list.) devices per week (b) Find the number of devices that will maximize profit. devices per week Find the maximum profit. $