45 because 30 divided by 2 is 15 the 15 times 3
Answer:
they are all even numbers except for 155
Step-by-step explanation:
|3+10|=|3|+|10|
|13|=|13|
13=13
Answer:
the inverse of the quadratic function
is ![\mathbf{f^{-1}(x)=\pm \sqrt{x+3}}](https://tex.z-dn.net/?f=%5Cmathbf%7Bf%5E%7B-1%7D%28x%29%3D%5Cpm%20%5Csqrt%7Bx%2B3%7D%7D)
Step-by-step explanation:
We need to find inverse of the quadratic function
Let
![y=x^2-3](https://tex.z-dn.net/?f=y%3Dx%5E2-3)
Replace x and y
![x=y^2-3](https://tex.z-dn.net/?f=x%3Dy%5E2-3)
Now, we will solve for y
Adding 3 on both sides
![x+3=y^2-3+3](https://tex.z-dn.net/?f=x%2B3%3Dy%5E2-3%2B3)
![x+3=y^2](https://tex.z-dn.net/?f=x%2B3%3Dy%5E2)
Taking square root on both sides
![\sqrt{y^2}=\sqrt{x+3}\\y=\pm \sqrt{x+3}](https://tex.z-dn.net/?f=%5Csqrt%7By%5E2%7D%3D%5Csqrt%7Bx%2B3%7D%5C%5Cy%3D%5Cpm%20%5Csqrt%7Bx%2B3%7D)
Now replace y with ![f^{-1}(x)](https://tex.z-dn.net/?f=f%5E%7B-1%7D%28x%29)
![f^{-1}(x)=\pm \sqrt{x+3}](https://tex.z-dn.net/?f=f%5E%7B-1%7D%28x%29%3D%5Cpm%20%5Csqrt%7Bx%2B3%7D)
So, the inverse of the quadratic function
is ![\mathbf{f^{-1}(x)=\pm \sqrt{x+3}}](https://tex.z-dn.net/?f=%5Cmathbf%7Bf%5E%7B-1%7D%28x%29%3D%5Cpm%20%5Csqrt%7Bx%2B3%7D%7D)
Equation: bh
Equation: 6.2x2.4=14.88 inches^2