For the angles you could automatically make the 90 degree 90 then your equation is 180-90-23=x and x is the answer

**Answer:**

Part A. It will take him 7 months

Part B. The equation is 30 - 45x + 250

**Step-by-step explanation:**

Part A. the answer is 7 because in 6 months Matthew will have $225 and if you add 30 you get $255.

Part B. It's the answer because its the only one that makes sense. 250 = 450 + 30. Its 45 not 450. 250 = 30.2 + 45. It's 30 not 30.2 and 30 30 well 30 30 doesn't make sense either.

P.S Can I have brainliest?

That’s weird for the answer i got 10/33

**Answer:**

purple line is -x and green line is x

hope that answers your question

used desmos to graph, its pretty cool!!!

For this case, the first thing we must do is define variables:

x: number of pillowcases

y: number of sheets

We now write the system of equations:

2x + 5y = 40

x = 2y

Solving the system we have:

x = 8.9

y = 4.4

**Answer:**

**The maximum number of pillowcases she could have purchased is:**

**x = 8 (spent less than $ 40)**