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What is the solution to the inequality StartFraction d Over 7 EndFraction + 4 ≤ 0? (–[infinity], –28) (–[infinity], –28] (28, [infinity]) [28, [infinity])

User Zfou
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2 Answers

2 votes

Answer:

(B)

Explanation:

User Mohan Seth
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6.7k points
6 votes

Answer:

(B)
(-\infty, -28]

Explanation:

Given the inequality:
(d)/(7)+4\leq 0


(d)/(7)+4\leq 0\\$Subtract 4 from both sides\\(d)/(7)+4-4\leq 0-4\\(d)/(7)\leq -4\\$Multiply both sides by 7\\(d)/(7)*7\leq -4*7\\d\leq-28

Therefore, the solution to the inequality is:
(-\infty, -28].

The correct option is B.

User Abora
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7.1k points