Answer:

The first one is m = 2/1

The second one is m = 3/2

The third is m = 3/1

Step-by-step explanation:

Using the slope formula: m = Rise/run = y2 - y1 all over x2 - x1, they should equal the answers I have provided. You can use an two x-values or y-values.

Sorry if I am wrong... I tried... the thought is what counts! :)

56) the answer is 3x+10

_____

5

If they want it simplified it will be 3x+2

57) x+40

____

5

If they want it simplified it would be x+8

I'm not sure about 58 sorry I hope this helps a little.

**Answer:**

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**Step-by-step explanation:**

The area of a rectangle is its <u>length x width</u>.

The perimeter of a rectangle is its** **<u>length + length + width + width</u>.

Let's have **l** stand for length and **w** for width. **A** will stand for area and **P** for perimeter. This gives us:

399 = l x w

80 = 2l + 2w We can divide both sides of this equation by 2 to get <u>40 = l + w</u>.

Now we need to find two numbers whose sum is 40 and product is 399.

Fitting some random numbers in gives us the numbers **19** and **21** for the length and width.

**Answer:**

**Step-by-step explanation:**

To find g(-3) all we have to do is plug the value of x = -3 into our function g(x)

So we have:

g(x) = -2x + 3x

So every place there is an x in that equation we are gonna put in a -3 because we want g(-3).

So: g(-3) = -2(-3) + 3(-3)

g(-3) = 6 - 9

g(-3) = -3

So we can say that when x = -3

**g(-3) = -3 **