Joey tried to evaluate an expression. Here is his work:
97-3+5³ / 25· 2· 3²
= 97-3+125/ 25· 2· 9 Step 1
= 97-3+5· 2· 9 Step 2
= 97-3+10· 9 Step 3
= 97-3+90 Step 4
= 97-93 Step 5
= 4 Step 6
Is Joey's work correct?
a. No, Joey made a mistake going from the given expression to Step 1. Joey should have multiplied 2 and 3 instead of evaluating exponents. The order of operations says to multiply before you evaluate exponents.
b. No, Joey made a mistake going from Step 4 to Step 5. Joey should have...
c. Yes, Joey's work is correct. He followed the correct order of operations.
d. Yes, Joey's work is correct. The order of operations doesn't matter in this case.