Answer
The mistake that the student made was multiplying 3$\times4^{-1}$
Correct answer = $\frac{3}{4}$
Work Step by Step
Correct solution:
f(-1) = 3 $\times 4^{-1}$
= 3 $\times \frac{1}{4^{1}}$
= 3 $\times\frac{1}{4}$
= $\frac{3}{4}$
Algebra 1
by Hall, Prentice
Published by
Prentice Hall
ISBN 10:
0133500403
ISBN 13:
978-0-13350-040-0
Chapter 7 - Exponents and Exponential Functions - 7-6 Exponential Functions - Lesson Check - Page 450: 7
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