## KNicksfan4life 2 years ago to pay your monthly bills, you can either open a checking account or use and online banking service. a local bank service charges \$3 per month and \$.40 per check, while online services charges a flat fee of \$9 per month If you pay about 12 bills a month which service should you choose? Justify your answer.

1. mathstudent55

The question is how many checks do you need to write per month to make the online banking service be a better deal? Let x = number of checks per month Local bank cost per month: 3 + 0.4x Online banking service cost per month: 9 3 + 0.4x = 9 Solve for x. If you write fewer than x checks per month, the local bank is a better deal. If you write x checks per month, they are the same. If you write more than x checks per month, the online banking service is a better deal.

2. KNicksfan4life

?

3. blondie16

lets put it this way, put them into equations: the local bank: y=.4x+3 online bank: y=9x now plug in 12 for x and see which one would be better for banking. (which one is less?) :)

4. KNicksfan4life

5. blondie16

all you have to do is put the 12 in for x and solve.. so it would be 4(12)+3 then you would do (4*12)+3 then do the same with the other one 9(12) and see which one is lower..

6. KNicksfan4life

so 48+3=108?

7. blondie16

you just do 48+3

8. KNicksfan4life

i got 108 and 51 is this right?

9. blondie16

yesh but you do not equal them up... so which one would you want to chose?

10. KNicksfan4life

51

11. blondie16

right so you would want to choose the local bank

12. KNicksfan4life

yes

13. blondie16

medal? :)

14. KNicksfan4life

u r the best

15. blondie16

lol not really but thanks