The equation for the cost C of a tired for a passenger vehicle) in dollars is given by the equation C = 37.5 X + 15, where X is the number of tires bought.
How much does it cost to buy 2 tires?
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5500 dollars is placed in an account with an annual interest rate of 6.5%. to the nearest tenth of a year, how long will it take for the account value to reach 19700 dollars?

Tim's phone service charges $23.06 plus an additional $0.22 for each text message sent per month. if tim's phone bill was $28.56, which equation could be used to find how many text messages, x, tim sent last month?

Acredit card advertises an annual interest rate of 23%. what is the equivalent monthly interest rate?