What is the solution set to the inequality 5(x - 2)(x + 4) > 0? {x\ x>-4 and x <2}
{x| X <-4 or x>2}
{x| X <-2 or x>4}
{xl x>-2 or x <4}

answer: c

substitute in the values.

for a:

f(0) = 0 + 9

f(0) = 9

a is a solution.

for b:

f(7) = 14 + 9

f(7) = 23

b is a solution.

for c:

f (3) = 6 + 9

f(3) = 15

c is not a solution. it's supposed to be 14.

for d:

f(2) = 4 + 9

f(2)= 13

d is a solution.

oh

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