**Answer:**

(x, y) = (5, 1)

**Step-by-step explanation:**

To <em>eliminate</em> x, you can double the second equation and subtract the first.

... 2(x +4y) -(2x -3y) = 2(9) -(7)

...11y = 11 . . . . . simplify

... **y = 1** . . . . . . divide by 11

Using the second equation to find x, we have ...

... x + 4·1 = 9

... **x = 5** . . . . . subtract 4

_____

<u>Check</u>

2·5 -3·1 = 10 -3 = 7 . . . . agrees with the first equation

(Since we used the second equation to find x, we know it will check.)

1/2 dozen pencils in 1/3 box

what about 1 dozen

we cross miltiply this to get

1/3*2=2/3

doing the same for all the questions we get

1/4*5/4=5/20

3/4*5/3=15/12

3/10*12/7=18/35

**Answer:**

C) (-4, 4]

**General Formulas and Concepts:**

<u>Algebra I</u>

- Range is the set of y-values that are outputted by function f(x)

**Step-by-step explanation:**

From the graph we see that our y-values span from -4 to 4. When y = -4, it is a open dot, meaning it is exclusive. When y = 4, it is a closed dot, meaning it is inclusive. Therefore, our range is:

(-4, 4] or -4 < y ≤ 4

Amount of money charged by Luigi as fees = $140

Hourly rate of Luigi for each contract = $25

In the question there are more important information's already provided. Let us write them down first.

Total amount charged by Luigi for a project = y

Number of hours worked on the project by Luigi = x

Then the equation can be written as

y = 140 + 25x

Now

The amount earned by Luigi after 10 hours = 140 + (25 * 10) dollars

= 140 + 250 dollars

= 390 dollars

So the amount earned by Luigi after 10 hours is $390. I hope the procedure is clear enough for you to understand.

Idk it’s complicated man move on to the next question because lit mom truck lick sick pic