Use the distributive property to simplify the expression.
-7(8x - 3) + x
A. x + 10
B. -15x + 4
C. -9x - 4
D. -55x + 21

D

Step-by-step explanation:

Distributive property: a*(b+c) = a*b + b*c

-7(8x - 3) + x = -7*8x - 3 * (-7) + x

                    = -56x + 21 + x   {Bring the like terms together}

                    = -56x + x + 21   {Now, add the like terms}

                    = -55x + 21

step-by-step explanation:

descending order means to order the polynomials from the term with the largest exponent to the term with the smallest exponent.  

therefore, the correct answer is d.