Laura kennedy needs to borrow $5178 to pay for nba season tickets for her family. she can borrow the amount from a finance company (at 4.7% add-on interest for 3 years) or from the credit union (36 monthly payments of $164.75 each). laura takes the credit union loan. at the time of her thirtieth payment she pays it off. if the credit union uses the rule of 78 for computing unearned interest, how much will she save by paying off the loan with the thirtieth payment? the amount that she will save by paying in full now is s (round to the nearest cent as needed.)

it has the same slope and a different y-intercept

hope this : )

step-by-step explanation:

12: 00 p.m. to 7: 00 p.m. is a total of 7 hours.

4: 00 p.m. to 7: 00 p.m. is a total of 3 hours.

this means that from 4: 00 p.m to 7: 00 p.m. this represents 3/7 of what was lost from 12: 00 p.m. to 7: 00 p.m.

after knowing this, after doing 11,600 - 6,800 = 4,800

4,800 represents 3/7 of what was lost for 7 hours.

we then divide 4,800 by 3 which gets 1,600.

because we know that 1,600 represents 1/7 of how much water was lost, we just have to multiply by 7, which gets 11,200.   after adding 11,200 to how much water was left at 7: 00 p.m. which was 6,800. 11,200 + 6,800 = 18,000

this means that the pool originally had 18,000 gallons in the pool.

you can also check your work by doing 18,000 - 4(1600), which becomes           1800 - 6400 which gets you 11,600.

you probably already have the answer but anyways it's b. 15.0

step-by-step explanation: