SOLUTION: Use the fact that f(x)=sqrt (x) is increasing on its domain to solve the inequalities: 8−5x≥x+7

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Question 1079823: Use the fact that f(x)=sqrt (x) is increasing on its domain to solve the inequalities:

8−5x≥x+7
Answer by rapture(86) About Me  (Show Source):
You can put this solution on YOUR website!
8 − 5x ≥ x + 7

Solve it like you would a linear equation.


-5x - x ≥ 7 - 8


-6x ≥ - 1

We now divide both sides by -6. Since we are to divide by a negative number,

reverse the inequality sign to less than or equal to.

x ≤ -1/-6

x ≤ 1/6

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