Whitney bought a watch for $107.50. The finance charge was $11 and she paid for it over 6 months. Use the formula, and calculate her approximate APR. Round the answer to the nearest tenth. Use the table for the following questions. Amount Financed Finance Charge # Months APR Nearest tenth$98 $12 10 A$124 $24 12 B$216 $25 15 C$438 $49 18 D$987 $205 24 E

APR = 14.78%

Step-by-step explanation:

APR =

        put values in above equation

where    finance charge = 11

              Amount financed = 107.5

               no. of payments = 6

APR = 14.78%

7

step-by-step explanation:

1. when "a" is a root of a polynomial, (x -a) is a factor of it. for the three roots given, the factors of the desired polynomial are (x +2)(x -1/2)(x -3).

in order to make the leading coefficient be negative, we need to multiply this product by a negative number. any negative number will do, but we choose a small (magnitude) value that will eliminate the fraction: -2.

then

f(x) = -2(x +2)(x -1/2)(x -3) = -(x +2)(2x -1)(x -3)

= -(2x² +3x -2)(x -3)

= -(2x³ -3x² -11x +6)

f(x) = -2x³ +3x² +11x -6

2. a graph created by the desmos on-line graphing calculator is shown, and the zeros are highlighted.

3. as indicated in part 1, the multiplier of this equation can be anything and the zeros will remain the same. you want a negative leading coefficient, so the "anything" is restricted to any of the infinite number of numbers that will make that be the case.