n - 4 = 16 Given
+ 4 + 4 Cancel out 4 to isolate n variable
n = 20
Prove.
20 - 4 = 16
16 = 16
True.
$16.76 divided by 4 = $4.19 each gallon
So $4.19 x 7 gallons = $29.33
The equation of the parabola whose focus is at (7, 0) and directrix at y = -7 is
(x-7)^2 = 14(y + 7/2)
Hope this helps
All you have to do is divide the left side of the ratio by 5 and the right side of the ratio by 7. The one that comes out even on both sides is the correct one.
The parent function
passes through the point
, since ![e^0=1](https://tex.z-dn.net/?f=e%5E0%3D1)
Your function passes through the point
, which means that the parent function has been translated 3 units up.
To translate a function vertically, you have to add a constant, i.e. you have to transform ![f(x)\mapsto f(x)+k](https://tex.z-dn.net/?f=f%28x%29%5Cmapsto%20f%28x%29%2Bk)
k is the amount of units you want to translate: positive if you translate upwards, negative if you translate downwards.
In your case, you move 3 units upwards, so you want k=3 and your function is
![y=e^x+3](https://tex.z-dn.net/?f=y%3De%5Ex%2B3)