If $7500 is invested at an interest rate of 5% each year, what is the value of the investment in 4 years? write an exponential function and solve. a. ; $7859.91 b. ; $32,153.20 c. ; $9116.30 d. ; $6170.27

Pick the expression that matches this description: a polynomial of the 5th degree with a leading coefficient of 7 and a constant term of 6 (choice a) 7x^5+2x^2+6 (choice b) 7x^6−6x^4+5 (choice c) 6x^7−x^5+5 (choice d) 6x^5+x^4+7

For the rule of 78, for a 12-month period, the last term in the sequence is 12 and the series sums to 78. for an 10 month period, the last term is and the series sum is . for a 15 month period, the last term is and the series sum is . for a 20 month period, the last term is and the series sum is

Combine the information in the problem and the chart using the average balance method to solve the problem.