4+m+n-m; use m=4 and n=9

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

Solve this equation using substitution. {4x + y = −2} {4x + 6y = 44}

The standard deviation for a set of data is 5.5. the mean is 265. what is the margin of error?