Natura Company manufactures umbrella using rented machinery. Rental charges are RM15,000 per year, plus RM1 for each machine hour used. over 10,000 hours. Calculate the total cost if machine is used for: a. 8,000 hours b. 20,000 hours

A car was valued at \( \$ 31,000 \) in the year 1991 . The value depreciated to \( \$ 13,000 \) by the year 2007 . A) What was the annual rate of change between 1991 and 2007? \( r=\square \) Round the rate of decrease to 4 decimal places. B) What is the correct answer to part A written in percentage form? \( r=\square \). C) Assume that the car value continues to drop by the same percentage. What will the value be in the year 2010 ? value \( =\$ \square \) Round to the nearest 50 dollars.

\( \$ 5000 \) are invested in a bank account at an interest rate of 5 percent per year. Find the amount in the bank after 13 years if interest is compounded annually. 9428 Find the amount in the bank after 13 years if interest is compounded quarterly. 9539 Find the amount in the bank after 13 years if interest is compounded monthly. Finally, find the amount in the bank after 13 years if interest is compounded continuously.

We deposit \( \$ 17000 \) into an account earning \( 4 \% \) interest compounded semiannually. How many years will it take for the account to grow to \( \$ 42500 \) ? Round to 2 decimal places. \( \square \) years

Find the time required for an investment of 5000 dollars to grow to 6500 dollars at an interest rate of 7.5 percent per year, compounded quarterly. Your answer is \( t=\square \) years. You may enter the exact value or round to 2 decimal places.

What amount, \( A \), will our account have after 5 years if it earns an annual rate of \( 5 \% \) compounded quarterly if we started with \( \$ 650 \). Round to the nearest cent. \( A=\$ \)