Question

The cost for Jan to set up one internet connection and one cable connection in her house is $75. The cost for her to set up one internet connection and two cable connections is $100. How much does one cable connection cost?

Answer 1

ok do you know how to start this?

Answer 2

No idea.

Answer 3

alright, well, we can start by writing a system of equations. call the internet connection "i" and the cable connection "c"
what equations can you write with these two variables?

Answer 4

i + c = 75

Answer 5

alright, good, and there's one more - look at the second sentence

Answer 6

i + c = 100? Idk

Answer 7

close, but it's i + 2c = 100, because it's *two* cable connections. got it?

Answer 8

Oh okay

Answer 9

okay so have you learned about either the elimination method or the substitution method?

Answer 10

Yes, but I suck at it ):

Answer 11

okay, which one is easier for you/ makes more sense to you?

Answer 12

Doesn't matter to me.

Answer 13

ok then, solve for i in the first equation

Answer 14

i = c - 75

Answer 15

*i = 75 - c
like this:
makes sense?