SOLUTION: Kendall is planning to buy a laptop for 1200 each month she doubles the amount she saved the previous month.If she saves $20 the first month in how many months will Kendall have e
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Question 788593: Kendall is planning to buy a laptop for 1200 each month she doubles the amount she saved the previous month.If she saves $20 the first month in how many months will Kendall have enough money to buy the laptop
You can put this solution on YOUR website! Amount saved each month:
1st month: 20
2nd month: 2*20
3rd month: 4*20
4th month: 8*20
etc.
Summing up the amounts saved: etc,. etc.
where is the number of months
given:
Take log base 10 of both sides
She will have enough money in about 6 months
check:
At the end of only 5 months, she has:
OK
