When Justin drives between Austin to Houston, he drives an average speed of 65 miles per hour. It takes 2 hour and 30 minutes for Justin to make the trip. His car averages 30 miles per gallon of gas. If gas costs \( \$ 3.45 \) per gallon, what is Justin's cost for each mile driven?

Suppose you have \( \$ 3000 \) deposited at \( 4.35 \% \) compounded weekly. About how long will it take your balance to increase to \( \$ 4200 \) ? years Round your answer to the nearest tenth of a year

Suppose you have \( \$ 15,000 \) to invest. Which of the two rates would yield the larger amount in 3 years: \( 8 \% \) compounded daily or \( 7.90 \% \) compounded continuously? Which of the two rates would yield the larger amount in 3 years? \( 8 \% \) compounded daily \( 7.90 \% \) compounded continuously

Juan Martin and Melanie have a new grandson. How much money should they invest now so that he will have \( \$ 74,000 \) for his college education in 18 years? The money is invested at \( 6.35 \% \) compounded annually.

Michelle invests in a savings account that pays \( 8 \% \) interest compounded monthly. What is the APY for this account? \( \square \) Round to the nearest \( 0.00 \% \)

21.- Un fabricante vende un producto a \( \$ 5,00 \) por unidad, vendiendo todo lo que produce, el costo fijo es \( \$ 3.000 \) y el variable por unidad es de \( 15 / 4 \) de q. La producción y el ingreso total en el punto de equilibrio es: a. 200 unidades y \( \$ 1.000 \) b. Ninguna es correcta (demostrar) I. c. 2.400 unidades y \( \$ 12.000 \) d. 500 unidades y \( \$ 2.000 \)