Answer
t=-9
Work Step by Step
You have the equation: 21=-2t+3 and you have to solve for t:
21=-2t+3 (subtract 3 from both sides)
18=2t
t=-9
Check your work:
21=-2(-9)+3
21=18+3
21=21
The equation is equal so t=-9.
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 5 - Linear Functions - 5-3 Slope-Intercept Form - Practice and Problem-Solving Exercises - Page 314: 71
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