Answer:
D. 123.9 - 20.886x
Step-by-step explanation:
Using the distributive property, we find the expansion to be ...
5.9(21) +5.9(-3.54x) = 123.9 -20.886x
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The distributive property tells you ...
a(b+c) = ab +ac
The factor outside parentheses multiplies each of the individual terms inside parentheses.
