Answer:
Company A: 250+10n
Company B: 90+12n
Step-by-step explanation:
First, make a equation in which r= red and b=blue.
So, since in the first box it has 4 red models and one blue model equaling 12,
the first equation looks like 4r+b=12.
The second equation looks like 2r+b=8.
What you would do is try and first solve for r by getting rid of b.
Since both equation has a positive b, you would make one equation have a negative b by multiplying the whole equation by -1.
-1*(2r+b=8)= -2r-b=-8
Add.
4r+b=12
+(-2r-b=-8)
2r=4
r=2
Then, you plug in 2 for the r for any of the original equations.
4(2)+b=12
8+b=12
b=4
or
2(2)+b=8
4+b=8
b=4
So, the red models weigh 2 pounds while the blue models weigh 4.
Answer:
330 minutes a week
Step-by-step explanation:
50 x 5= 250 then add 80 because 40 x 2 is 80 and get 330
Answer:
5,000,000
Step-by-step explanation:
An=Asub1+d(n-1)
Asub5= -5+½(4)
=-5+7
=2
