Answer:
b) 18
Step-by-step explanation:
→ Set up an for part a
→ Multiply both sides by 100
→ Divide both sides by 80
→ Multiply both numbers together for part b
45 × 40 = 1800
→ Divide the answer by 100
1800 ÷ 100 = 18
a. 55%
b. 22
Answer: 16
Step-by-step explanation: following PEMDAS you’ll solve the exponent first
3^2= 9
9+21/3
Then solve the division
21/3 = 7
9+7
Then addition
9+7= 16