I got 16.8 , but she’ll need roughly 17 gallons of paint :)
how i did it :
1. so you know she’ll need 4/5 per book case, and there are 16 bookcases.
2. So you do 16 x 5, then you get 84
3. and you divide 84 by 5. and you’ll get 16.8, that’s how many gallons of paint she needs
<1=<2
<3+(<1 or <2)=180
6x+y-4=x-9y+1
5x+10y=5
12x-9y=177
Solve for x and y
☺☺☺☺
I think the answer would be d because you are trying to protect your home from getting struck by lightning.
Answer:

Step-by-step explanation:
Basically the word problem here is trying to get us to find the line using the two points (113,70) and (173,80).
It also tells us by saying that we're modeling the temperature that we're going to be using the y = mx + b formula. m and b are what we'll mainly be looking for.
Let's start by finding m, the slope. We'll be using the point slope formula:

So m = 1/6.
Now let's use that m and choose one of the points (I chose (113,70) ) to plug in everything but b in the original formula

so now that we know our b and our m, we can plug those into the original equation to get our answer!
