64% as a fraction or mixed number in simplest form

Afamily has five members. a mom, a dad, two sisters, & a brother. the family lines up single file. what is the probabillity that the mom is at the front of the line

For a function f(x), a) if f(7) = 22 then f^-1(22) = b) f^-1(f(c)) =

Pls as soon as ! will award brainliest and 20 ! also the answer is not 22.5 degrees! find the value of x in each case: