PLEASE HELP ME IM CONFUSED WILL GIVE BRAINLIEST :) ASAP

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

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.

the direct variation says that:

then the equation is of the form is given by:

            where k is the constant variation.

from the given table:

consider any value of x and m(x)=y

x = 2 and m(x)=y = 3

substitute these value in [1]; we have;

divide both sides by 2 we get;

⇒

check:

put x = -1 and m(x) = -1.5

substitute in the equation:

-1.5 = -1.5                   true

therefore, the function m(x) represents a direct variation

graph of this function as shown below:

300pi

step-by-step explanation: