Question

12-4x≤20

Which of these shows the solution to this inequality?

A

B

C

D

Answer 1

\[12 - 4x \le 20\]
Subtract 12 from 12 and 20

\[12 - 4x \le 20\]
-12 -12
_______________
\[-4x\le 20\]
(Divide each side by -4)
\[-4x\le 20\]
____ ____
-4 -4

\[x\le\] -5
(When dividing by negatives, the inequality sign flips)
\[x\ge-5\]