Question

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1. simplify each expression \t\t10 pts

a) $(9 - 2^2 + 10 \cdot 8) + 5$

Explanation:

Step1: Evaluate exponents first

$2^2 = 4$, so the expression becomes $(9 - 4 + 10 \cdot 8) \div 5$

Step2: Perform multiplication

$10 \cdot 8 = 80$, so the expression becomes $(9 - 4 + 80) \div 5$

Step3: Do addition/subtraction left to right

$9 - 4 = 5$, then $5 + 80 = 85$, so the expression becomes $85 \div 5$

Step4: Perform final division

$85 \div 5 = 17$

Answer:

17