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bearhunter [10]
3 years ago
12

Solve for x

Mathematics
1 answer:
Sidana [21]3 years ago
8 0

Answer:

Option C. x=-3

Step-by-step explanation:

we have

-15x+60\leq 105 ----> inequality A

solve for x

subtract 60 both sides

-15x\leq 105-60

-15x\leq 45

Divide by -15 both sides

Remember that when you multiply or divide both sides of an inequality by a negative number, you must reverse the inequality symbol

x\geq -3

The solution of the inequality A is the interval  [-3,∞)

we have

14x+11\leq -31 ----> inequality B

Solve for x

subtract 11 both sides

14x\leq -31-11

14x\leq -42

Divide by 14 both sides

x\leq -3

The solution of the inequality B is the interval (-∞,-3]

The solution of the system is

(-∞,-3] ∩ [-3,∞) =-3

therefore

The solution  is x=-3

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