The answer is that f-1(3) = 7.
In order to find the answer, we first must find the inverse function. The f-1 indicates that we are looking for an inverse. To find any inverse, we first must switch the x and f(x) values. We then solve for the new f(x), which gives us the inverse.
f(x) = (2x - 2)/4 ----> Switch x and f(x)
x = (2f(x) - 2)/4 -----> Multiply both sides by 4
4x = 2f(x) - 2 ----0-> Add 2 to both sides
4x + 2 = 2f(x) ------> Divide both sides by 2
f-1(x) = (4x + 2)/2
Now that we have the inverse function, we can put in 3 and find the answer.
f-1(x) = (4x + 2)/2
f-1(3) = (4(3) + 2)/2
f-1(3) = (12 + 2)/2
f-1(3) = (14)/2
f-1(3) = 7
Answer:
1 1/2 liters of milk is required to fill the jug
Step-by-step explanation:
Gabriel used 1/3 of a liter of milk to make 2/9 of a jug of tea. How much milk is required to fill the jug?
From the above question, we know that:
2/9 jug of tea = 1/3 liter of milk
1 jug of tea = x
Cross Multiply
2/9 × x = 1 × 1/3
x = 1/3 /2/9
x = 1/3 ÷ 2/9
x = 1/3 × 9/2
x = 3/2
x= 1 1/2 liters of milk
Therefore, 1 1/2 liters of milk is required to fill the jug
Answer:
72
Step-by-step explanation:
You can use the 9s trick
Answer:
0
Step-by-step explanation:
