Bob has three pennies. Betty has three times as many pennies as Bob. Bill has three times as many pennies as Betty. Barb has three times as many pennies as Bill. How do you express the number of pennies Barb has in exponential form?
2 Answers
Barb has
Explanation:
Explanation:
Let the number of pennies Bob has equal
Therefore,
Betty has three times as many pennies as Bob, so she has
Bill has three times as many pennies as Betty, so he has
Barb has three times as many pennies as Bill, so she has
Substituting