Respuesta :

Answer:

Nathan

y = 2x + 30

Olivia

y = 4x + 15

x = 7.5

This means by the 8th week Olivia will have more saved

Step-by-step explanation:

Nathan

y = 2x + 30

Olivia

y = 4x + 15

-------------------------

substitute 4x + 15  for y in the first equation

4x + 15 = 2x + 30

Subtract 2x from both sides

2x + 15 = 30

Subtract 15 from both sides

2x = 15

Divide both sides by 2

x = 7.5

This means by the 8th week Olivia will have more saved

pjjohnson847

Answer:

Nathan: 2x+30

Olivia: 4x+15

Week 7.5

Step-by-step explanation:

They add money (x) and there was already money in the account so you need to add that.  4(7.5)+15=45, 2(7.5)+30=45. It means that the week 7.5, they will each have the same amount in their bank account. After that, olivia will have more money in her bank account, and nathan did, but after week 7.5 he will not.

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