4. Find the inverse of the function, and then determine whether the inverse is a function y=x² + 4
y=+/x-4; inverse is not a function
y=+/x- 4 ; inyerse is a function
y= 4-x^2; inverse is not a function
y=1/x^2+4
; inverse is a function

What is the equation and solution for the sentence? the sum of a number and thirty-one is one hundred thirteen. write the equation as n-31=113 and subtract 31 from both sides. the answer is 82. write the equation as n+31=113 and subtract 31 from both sides. the answer is 82. write the equation as n+31=113 and add 31 to both sides. the answer is 144. write the equation as n-31=113 and add 31 to both sides. the answer is 144.

I'll give brainliest if you answer right : )

One of the same side angles of two parallel lines is 20° smaller than the other one. find the measures of these two angles.