a student estimated that it would take 3 hours to write a book report, but it actually took her 5 hours. what is the percentage error of her estimate?

Amarathon runner jogging at a constant speed for 45 minutes is it proportional to time or not

If $740 is invested at an interest rate of 11% per year and is compounded continuously, how much will the investment be worth in 7 years? use the continuous compound interest formula a = pert.

Organic apples are on special for $1.50 per pound. does total cost vary inversely or directly with the number of pounds purchased? find the cost of 3.4 pounds of apples. a. inversely: $5.10 b. directly; $5.10 c. inversely: $2.27 d. directly; $2.27