An inverse function produces points (y,x) for every point (x,y) produced by the parent function. So to find the inverse function, you solve for the independent variable and when done switch the variable labels....
y=x+5 subtract 5 from both sides
y-5=x now switch labels
y=x-5
So if f(x)=x+5
f^-1(x)=x-5
13x + 6 = 6
Use the subtraction property of equality:
13x +6 -6 = 6-6
13x = 0
Now use the division property of equality:
You can use the recipricol and multiply:
13/1 13x = 0 × 13/1
x = 0/1
You can check by substituting 0/1 for x.
4^1 = 4
4^2 = 16
4^3 = 64
4^4 = 256
The probability that the card is a football card is 20 out of 50 or 40%
the probability that the card is a basketball card is 10 out of 50 or 20%
We use the ratio x:360 to find portions of the circle (again, through the ratio)
so we use 60/360 = x/30 in^2
1/6 = x/ 30
x = 5.
The answer is 5 in^2