Problem 28. A truck rental company has a at serviee fee and then costs a certain amount per mile driven. Suppose one family rents a. truck, drives 50 miles and their cost is $111.25. Suppose another family rents a truck, drives 80 miles, and their cost is $160. a) Find the linear equation for the cost of renting a truck as a function of the number of miles they drive. In) Use the equation to nd the cost if they drove 150 miles. c] How man}.r miles did a renter drive if their cost was $125? Math 6 Fresno State Problem 29. A student invests $6,000 in an account with an interest rate of 3% compounded semiannually. How many years will it take for their account to be worth $14,000? Problem 30. A student invests $7,000 in an account with an interest rate of 4% compounded continuously. How many years will it take for their account to be worth $17,000