CPM Homework Help : CCA2 Problem 9-77

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9-77.

Simplify each expression below.

$3^{-2} · 3^4$
Hint (a):
$\frac{1}{3^2}·3^4$

$3^{-4} · 3^4$
Answer (b):
$1$

$(3^{-1}+ 3^{-3}) · 3^4$
Answer (c):
$30$

$\frac { 3 ^ { - 2 } - 3 ^ { - 1 } } { 3 ^ { - 3 } + 3 ^ { - 4 } }$
Hint (d):
$\frac{\frac{1}{3^2}-\frac{1}{3^1}}{\frac{1}{3^3}+\frac{1}{3^4}}$ Now follow Order of Operations.

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