Aresearcher places a radio advertisement offering $32 in exchange for participation in a short study. the researcher accepts the first nine people who respond to the advertisement. which of the following statements is true about the sample a. it is a valid sample because the first nine people were selected to participate. b. it is not a valid sample because it is not a random sample of the population. c. it is a valid sample because money was offered to participants. d. it is not a valid sample because it is only a short study.

The answer is B

Step-by-step explanation:

It is not a valid sample because it is not random and could be biased

also i did the test and got it right

give me brainliest please

(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