I need some help with this last problem I can’t seem to figure it out

Which of the following pairs of functions are inverses of each other? o a. f(x)=x72+8 and 96-9 = 7/x+2) =8 o b. f(x)= 6(x - 2)+3 and g(x) - *#2-3 o c. $4) = 5(2)-3 and 90- 4*: 73 o d. f(x) = 6)-12 and 910 – +12

What line represents the relationship between r and s

X^2/100+y^2/25=1 the length of the major axis is: a)5 b)10 c)20