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
Algebra.Com
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
Answer by josmiceli(19441) (Show Source): 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
RELATED QUESTIONS
If Sarah was saving for a computer that cost$1200 the first month she saved$20 and... (answered by Boreal,stanbon,MathTherapy)
Martha wants to buy a digital camera from her three-month savings. To do this she needs... (answered by checkley77)
Martha wants to buy a digital camera from her 3 month savings. To do this she needs to... (answered by josmiceli)
Jane is saving money to buy a laptop computer costing $1200. Jane models her savings by... (answered by josmiceli)
Kim is planning to buy a new coat and new shoes. She has saved $122. Which of the... (answered by edjones)
She is paid a base salary of $1200 a month plus a 2% commission on the sales she makes.... (answered by jojo14344)
Jodi is paid by commission as a salesperson. She earns 5% commission for each laptop... (answered by greenestamps)
lauren earns the same amount for mowing four of the neighbours lawns every month. each... (answered by Theo)
brianna has saved $600 to buy a new tv. if the tv she wants is $1,800 and she saves $20 a (answered by rfer)