Question

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

Answer 1

(B)

Explanation:

Answer 2

(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.