PLEASE HELP!! WILL GIVE BRAINLIEST ANSWER TO THE FIRST PERSON

See below.

Step-by-step explanation:

So, from the figure, we can see that US is the combined length of UT and TS. In other words:

We are given their equations. Substitute them:

And this is our answer to 4.

Now, solve for x. Add on the left:

Subtract -3x from both sides:

Subtract 9 from both sides:

Divide both sides by -2:

So, for 5, the answer is 10.

And we're done!

y-1700=200(x+4)

step-by-step explanation:

200(x+4) is 200x + 800 she is saving 200 per week x is the weeks and the -1700 is. us that’s howmuch she already had