Not respond with i don't know or anything but with the answer just for the ! the average test score a of five test scores t 1, t 2, t 3, t 4, and t 5 can be computed by the formula shown below.

a=t 1+t 2+t 3+t 4+t 5/(over)5

if a student has test scores of 88, 71, 80, and 72, what score does she need on the fifth test so that her five-test average is 76?

(x3 + 6x2 + 2x - 6) • (x - 1)

step-by-step explanation:

polynomial long division :

3.2     polynomial long division

dividing :   x4+5x3-4x2-8x+6

                              ("dividend")

by         :     x-1     ("divisor")

dividend     x4   +   5x3   -   4x2   -   8x   +   6

- divisor   * x3     x4   -   x3            

remainder         6x3   -   4x2   -   8x   +   6

- divisor   * 6x2         6x3   -   6x2        

remainder             2x2   -   8x   +   6

- divisor   * 2x1             2x2   -   2x    

remainder               -   6x   +   6

- divisor   * -6x0               -   6x   +   6

remainder                     0

quotient :   x3+6x2+2x-6   remainder:   0