Question

What is the solution to the inequality?

(–∞, –28)
(–∞, –28]
(28, ∞)
[28, ∞)

Answer 1

the correct answer choice is marked: (-∞, -28].

Explanation:

Subtract 4 and multiply by 7 to find the solution.

d/7 +4 ≤ 0

d/7 ≤ -4

d ≤ -28 . . . . . . . (-∞, -28] in interval notation