Homework Help: math

Posted by Melissa on Thursday, September 22, 2011 at 11:22pm.

for h(x)=5-4x, determine the input for x when the output of h(x) is -11

i have tried to answer this question so many times , but i cant figure it out

math - Anonymous, Friday, September 23, 2011 at 2:32am
5 - 4 x = -11

- 4 x = -11 -5

- 4 x = -16 Divide both sides with - 4

- 4 x / - 4 x = - 16 / - 4

x = 4

Proof:

h ( x ) = 5 - 4 x = 5 - 4 * 4 = 5 - 16 = - 11
math - Anonymous, Friday, September 23, 2011 at 4:50am
5 - 4 x = -11

- 4 x = -11 -5

- 4 x = -16 Divide both sides with - 4

- 4 x / - 4 = - 16 / - 4

x = 4

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