The inverse of the function f(x) = 2x - 10 is f-1(x) would be x/2 + 5.
Lets try to solve it,
We will be using the inverse function to solve this.
f(x) =
Replace f(x) with y.

Interchange x and y

Solve for y

Replace y with f-1(x).

Thus, the inverse of the function f(x) = 2x - 10 is f-1(x) = x/2 + 5
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CosΘ < 0 ->2nd or 3rd quadrant
cotΘ > 0 -> 1/tanΘ > 0 -> tanΘ >0 -> 1st and 3rd quadrant.
So Θ lines in the 3rd quadrant
I'm assuming you're looking for the measure of angle y. Rule is that angle y will be equal to 1/2 of its intercepted arc. That arc measures 360-160-60 which is 140. Half of 140 is 70. So the first choice above is the one you want.
First to find the area the formula is A=pi(r^2)
so plug in the numbers A= (3.14)(4.5)(4.5)= 63.62 is the total area
150*63.62=9543 9543/360=26.5
So the answer is 26.5 cm ^2