Answer:120in
Step-by-step explanation:
Answer:
y=3.5
Step-by-step explanation:
<u>7</u><u>y</u><u>-</u><u>4</u><u>.</u><u>6</u><u>-</u><u>6</u><u>y</u>
<u>4</u><u>.</u><u>5</u><u>=</u><u>7</u><u>y</u><u>+</u><u>6</u><u>y</u>
<u>4</u><u>.</u><u>5</u><u>=</u><u>1</u><u>3</u>y
4.5. 4.5
y=3.5
Pretty sure you set up a proportion somehow, keep months and $ separate… for example, $ over months, then $ over x… not for sure…
Converting this into an equation, we get:
6x+4y=14
-8x-4y=-12
We can solve this by adding the system of equations.
6x+4y=14
+ -8x-4y=-12
-------------------------
-2x=2
Simplifying, we get that x=-1. We can replug this into one of the equations to get y. We'll choose 6x+4y=14
Plugging in -1 for x, we get that:
6(-1)+4y=14
which is
-6+4y=14
which is
4y=20
Simplify this to get that y=5
To check, you can plug in x and y into both equations to make sure that they are true.
6(-1)+4(5)=14
-6+20=14
14=14 which is true
-8(-1)-4(5)=-12
8-20=-12
-12=-12 which is true
x=-1 and y=5
:)