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
$(0.1 x^{2} + 3 x + 80) + (0.5 x^{2} - 2 x + 60) = (0.1 x^{2} + 0.5 x^{2}) + (3 x - 2 x) + (80 + 60) = 0.6 x^{2} + x + 140$
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