Answer
12≤f
Work Step by Step
8≤f−4 : add 4 to both sides
8+4≤f−4+4 : simplify
12≤f
Verify that 12 is a solution at the endpoint.
8=?12−4
8=8✓
Verify that a number greater than 12 is a solution.
8≤?14−4
8≤10✓
Algebra 1: Common Core (15th Edition)
by Charles, Randall I.
Published by
Prentice Hall
ISBN 10:
0133281140
ISBN 13:
978-0-13328-114-9
Chapter 3 - Solving Inequalities - 3-2 Solving Inequalities Using Addition or Subtraction - Practice and Problem-Solving Exercises - Page 174: 16
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