Answer:
![y = 3(x +21)](https://tex.z-dn.net/?f=y%20%3D%203%28x%20%2B21%29)
Step-by-step explanation:
Find the inverse this equation:
![f(x) = (\frac{1}{3}x) - 7](https://tex.z-dn.net/?f=f%28x%29%20%3D%20%28%5Cfrac%7B1%7D%7B3%7Dx%29%20-%207)
-Take the variable
for
, because both
![y = (\frac{1}{3}x) - 7](https://tex.z-dn.net/?f=y%20%3D%20%28%5Cfrac%7B1%7D%7B3%7Dx%29%20-%207)
-Switch both variable
and
:
![y = (\frac{1}{3}x) - 7](https://tex.z-dn.net/?f=y%20%3D%20%28%5Cfrac%7B1%7D%7B3%7Dx%29%20-%207)
![x = (\frac{1}{3}y) - 7](https://tex.z-dn.net/?f=x%20%3D%20%28%5Cfrac%7B1%7D%7B3%7Dy%29%20-%207)
-Solve for
:
![x = (\frac{1}{3}y) - 7](https://tex.z-dn.net/?f=x%20%3D%20%28%5Cfrac%7B1%7D%7B3%7Dy%29%20-%207)
-Switch sides:
![\frac{1}{3}y - 7 = x](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B3%7Dy%20-%207%20%3D%20x)
-Add both side of the equation by
:
![\frac{1}{3}y - 7 + 7 = x + 7](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B3%7Dy%20-%207%20%2B%207%20%20%3D%20x%20%2B%207)
![\frac{1}{3}y = x + 7](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B3%7Dy%20%3D%20x%20%2B%207)
-Multiply both sides by
:
![\frac{\frac{1}{3}y}{\frac{1}{3} } = \frac{x + 7}{\frac{1}{3} }](https://tex.z-dn.net/?f=%5Cfrac%7B%5Cfrac%7B1%7D%7B3%7Dy%7D%7B%5Cfrac%7B1%7D%7B3%7D%20%7D%20%20%3D%20%5Cfrac%7Bx%20%2B%207%7D%7B%5Cfrac%7B1%7D%7B3%7D%20%7D)
![y = \frac{x + 7}{\frac{1}{3} }](https://tex.z-dn.net/?f=y%20%3D%20%5Cfrac%7Bx%20%2B%207%7D%7B%5Cfrac%7B1%7D%7B3%7D%20%7D)
-Divide
by multiplying by ![\frac{1}{3}](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B3%7D)
![y = \frac{x + 7}{\frac{1}{3} }](https://tex.z-dn.net/?f=y%20%3D%20%5Cfrac%7Bx%20%2B%207%7D%7B%5Cfrac%7B1%7D%7B3%7D%20%7D)
![y = 3(x +21)](https://tex.z-dn.net/?f=y%20%3D%203%28x%20%2B21%29)
Therefore, the answer is
.
-6.2 plus -4.8 is -11. add the 3.8 to get -7.2
-4.8 plus 3.8 is -1
-1 plus -6.2 is -7.2
-7.2=-7.2
OK ,
theres 150 fish in the pond mius 8% each day so
150-8%=138
138-8%=129.96
129.96 is your answer
Answer:
77
Step-by-step explanation:
to start off the "difference" is the way to say total in subtraction
you would have to subtract 87 and 10 to find the difference
87 - 10 = 77
77 is the difference between their times
Answer:
x= -3
Step-by-step explanation:
-x+3(5)=12
-x+15=12
15-15=0 12-15=-3
x= -3