ACT 2017 June(74C) Math Question 7 Explanation - ACT Helper

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2017 June(74C) Math Question 7
Algebraic & Function Expressions
- Simplify Algebraic Expressions
Choice B
$$(0.1x^2+3x+80) +(0.5x^2-2x+60)=(0.1x^2+0.5x^2)+(3x-2x)+(80+60)=0.6x^2+x+140$$
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