Solve the problem.Let x represent the number of gallons of gas sold at $2.40 per gallon, and let y represent the total cost of the gasoline (in dollars). Write an equation for this situation. Then give the ordered pair with an x-value of 13 associated with this equation.
A. x = 2.40y; (13, 5.42)
B. y = 2.40 + x; (13, 15.40)
C. x = 2.40 + y; (13, 10.60)
D. y = 2.40x; (13, 31.20)
Answer: D
Mathematics
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