D^2jk
This is because the d would wind up squared whereas you would simply express the other two.
Answer:
x=-5
Step-by-step explanation:
![3x-7=7x+13\\\\3x-7+7=7x+13+7\\\\3x=7x+20\\\\3x-7x=7x+20-7x\\\\-4x=20\\\\\frac{-1}{4}(-4x) =\frac{-1}{4}(20)\\\\x=-5](https://tex.z-dn.net/?f=3x-7%3D7x%2B13%5C%5C%5C%5C3x-7%2B7%3D7x%2B13%2B7%5C%5C%5C%5C3x%3D7x%2B20%5C%5C%5C%5C3x-7x%3D7x%2B20-7x%5C%5C%5C%5C-4x%3D20%5C%5C%5C%5C%5Cfrac%7B-1%7D%7B4%7D%28-4x%29%20%3D%5Cfrac%7B-1%7D%7B4%7D%2820%29%5C%5C%5C%5Cx%3D-5)
There are two equations you can get from this.
2.5X+1.25Y=1375
X+Y=700
By solving for X, we can then plug the 2nd equation into the first equation.
X=700-Y
2.5(700-Y)+1.25Y=1375
1750-2.5Y+1.25Y=1375
375=1.25Y
Y=300
After we get the Y, we solve for the X.
300+X=700
X=400
There were 400 adults, and 300 children. A quick check proves this.
2.5(400)+1.25(300)=1375
The first thing you should know for this case is how many years there are from 1997 to 2014.
The number of years is:
x = 2014-1997 = 17
Then, you must replace this value in the given equation:
y = 1.28e ^ 1.31x
y = 1.28 * e ^ (1.31 * (17))
y = 6011018736
answer:
the number of camera phones shipped in millions in 2014 is
y = 6011018736