What is the value of x? A.15 start root 3 end root
B. Start Fraction 15 over 2 End Fraction
C.5 start root 3 end root
D. Start Fraction 15 Start Root 2 End Root over 2 End Fraction

Really need on these. i have no idea what to do

You have a 32-foot fence around a square garden. there are 4 equal sections. you paint 13 of one section of the fence. what fraction of the fence did you paint? you have a 32-foot fence around a square garden. there are 4 equal sections. you paint 13 of one section of the fence. what fraction of the fence did you paint?

Which function has an inverse function? a. f(x)= |x+3|/5 b. f(x)= x^5-3 c. f(x)= x^4/7+27 d. f(x)= 1/x²