Solve. 18. Find all positive and negative integers b such that
x2 + bx - 15 factors.

19. Find all positive and negative integers b such that
3x2 + bx + 4 factors.

20. The volume V(x) of a box in terms of its height x is given
by the function V(x) = x3 – 2x2 – 15x. Factor this
expression for Vx).

answer: -10

step-by-step explanation:

s(t) = 1 - 10t

s(x) = 1 - 10x

s(x + h) = 1 - 10(x + h)

            = 1 - 10x - 10h

s(x + h) - s(x) = 1 - 10x - 10h - (1 - 10x)

                      = 1 - 10x - 10h - 1 + 10x

                      = -10h

= -10

question 1: step-by-step explanation:

1/4 of 84 = 84÷4= 21

oh

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