I think 47.1 I followed the formula.
The answer is 4. 4 + 4 = 8, then the parentheses make it negative. correct me if I'm wrong.
Answer:

Step-by-step explanation:
Calculate the difference:

Calculate the ratio:

Convert to percentage:

Answer:
6 pounds.
Step-by-step explanation:
70-25.36= 44.64 (the amount of money she spent)
44.64/7.44 (per pound cost)= 6