Jacob decides to save money for a new tablet. He will save $3 the first week and then triple the amount he has saved
each week for 5 weeks. Write and evaluate an exponential
expression to find how much money Jacob will have in his
savings in Week 5.
Represent the problem with repeated multiplication and
exponential expressions.
Week 1
3 = 31
Week 2
3.3= 32
Week 3
3.3.3= 33
Week 4
3.3.3.3=34
Week 5
3.3.3.3.3=35
Week 5 expression: 35
Evaluate the expression: 35 = 3.3.3.3.3 = 243
Jacob will have $243 in his savings in Week 5.
1 Look at the table. How many times greater is the amount
in Jacob's savings in Week 3 than in Week