Answer:
5 weeks
Step-by-step explanation:
She would need to work at least 8 weeks because the bicycle is $80 and she has $35.
Even number are of the form 2n. The sum of this sequence is the average of the first and last terms times the number of terms.
So the first term is 2 and the 25th term is 50 so the sum is:
(2+50)(25/2)
52*12.5=650
The conjecture they wish you to make is that for n terms, the sum will be:
s=n(n+1)
And for 25 terms that would give you:
s=25*26=650
Given:
buy a house in 9 years.
Estimated cost of the house = 175,800
down payment = 20%
closing cost = 7%
down payment:
175,800 x 20% = 35,160
closing cost:
175,800 x 7% = 12,306
Amount to save: 35,160 + 12,306 = 47,466
monthly savings:
9 years x 12 months = 108 months
47,466 / 108 = 439.50 savings per month.
The unit rate is approximately 18 i think. Hope it helps :)
