What’s the answer to this

The mean of a set of data is -3.82 and its standard deviation is 2.31. find the z score for a value of 3.99.

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

If f(x)= sqrt4x+9+2, which inequality can be used to find the domain of f(x)?