A store sells books for $12 each. In the proportional relationship between x, the number of books purchased, and y, the cost per books in dollars” to “y, the total cost of the books in dollars, the constant of proportionality is 12. Which equation shows the relationship between x and y? A: y = 12 - x

B: y = 12x

C: y = 12 + x

D: y = x under 12

P. S: 12/x to be exact

B

Step-by-step explanation:

we know it has to equal y(the total cost of books). We also know that each book is 12 dollars each. So 12 dollars per book =12x. We add in the y now,

y=12x  

since proposition states that a number is greater than 25, if is true then the number must actually be greater than 25.

this implies that all possible options, except 24, can be accepted

(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