Write an equation for the linear function and use it to answer the given question. In the town of Oak Forest, a 3% local sales tax and a 5% state sales tax are charged on all retail sales. Let p be the before-tax amount of a purchase in dollars. Let T be the after-tax amount of the purchase. Find a linear equation that describes how T varies with p. What is the total price of an item that costs $49 before taxes?
A. T = 0.98p; $48.02
B. T = 0.08p + 1; $4.92
C. T = 1.08p; $52.92
D. T = 0.92p; $45.08
Answer: C
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x + 
= 
x
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