You would like to buy a laptop for $2140. You are offered a payment option where there is no payment for the first six months, but the $2140 must be repaid at the end of that time with an annual simple interest rate of 21.1%. Find the total cost. $ (round to two decimal places) You have $1500 to invest in an account that earns 3.6% interest per year compounded quarterly. How much money will you have in your account after 6 months? $ (round to the nearest dollar) Suppose $4500 is invested in an account with an annual interest rate or 7.5% and the interest is compounded daily. By what percentage does the balance increase in three years? % (round to one decimal place)