1) 15x^3 + 19x^2 + 6x
a) (3x^2 +2)(5x+3)
b) x(3x+2)(5x+3)
c) x^2(3x+2)(5x+3)
d) x(5x+2)(3x+3)
e) prime
i chose e) prime.
2) 2x^2 - 14x - 6x + 42
a) 2(x+7)(x+3)
b) (x+7)(2x-6)
c) 2(x-7)(x-3)
d) (x-7)(x-3)
e) prime
i know that this is 2x^2 - 20 + 42 when you combine the 14x and 6x so i chose answer e) prime but i am not sure for this one.

Mary works for a company that ships packages and must measure the size of each box that needs to be shipped. mary measures a box and finds the length is 7 inches, the width is 14 inches, and the height is 15 inches. what is the volume of the box? [type your answer as a number.]

Explain step-by-step how to simplify -5(2x – 3y + 6z – 10).

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