statistics

6. Fritz buys a car costing $6300. He agrees to make payments at the end of each monthly period for 6 years. He pays9.6% interest, compounded monthly. What is the amount of each payment? Find the total amount of interest Fritz will pay. 7. Find the future value of an ordinary annuity if payments are made in the amount R and interest is compounded as given. Then determine how much of this value is from contributions and how much is from interest. R=9,300; 6% interest compounded semiannually for 3 years. The future value of the ordinary annuity is $ b. The amount from contributions is $ C. and the amount from interest is 8. A company will need $50,000 in 8 years for a new addition. To meet this goal, the company deposits money in an account today that pays 8% annual interest compounded quarterly. Find the amount that should be invested to total $50,000 in 8 years. The company should invest $ 9. Find the compound amount for the deposit and the amount of interest earned. $650 at 6.3% compounded semiannually for 13 years The compound amount after 13 years is $ The amount of interest earned is $ 10. Find the simple interest. Assume a 360-day year. $8973.67 at4.2% for 55 days The simple interest is $ Find the values of the variables. a+3 4z+1 12m 0 2 = m = Use the Gauss-Jordan method to solve the following system of equations. 2x + 7y - z=0 7x - y+ 2z = 1 9x + 6y + z = 1 ) A. The solution is ( D (Simplify your answers.) ) B. There is an infinite number of solutions. The solution is ( . z), where z is any real number. D C. There is no solution Use the Gauss-Jordan method to solve the following system of equations. 4x + 4y - 4z = - 12 2x - y+ z= x - 4y + 3z = - 8 A. There is one solution. The solution is (D (Type an exact answer in simplified form.) B. There are infinitely many solutions. The solutions are ( . ,z) , where z is any real number. C. There is no solution