CPM Homework Help : AC Problem 3-31

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Home > AC > Chapter 14 > Lesson 14.3.1.2 > Problem 3-31

3-31.

Solve each equation below for $x$ . For parts (c) and (d), use the ideas from problem 3-30 so that you do not have to use Guess and Check.

$2^{(x+3)} = 2^{2x}$
Hint (a):
Recall problem 3-7.
Answer (a):
$x = 3$

$3^{(2x+1)} = 3^{3}$
Hint (b):
See part (a).

$9^{x} = 3^{40}$
Hint (c):
$9 = 3^{2}$

$8^{70} = 2^{x}$
Hint (d):
See part (c), or problem 3-30 for guidance.

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