12ad3 and which term are like terms?

Many newspapers carry a certain puzzle in which the reader must unscramble letters to form words. how many ways can the letters of emdangl be arranged? identify the correct unscrambling, then determine the probability of getting that result by randomly selecting one arrangement of the given letters.

Eric drove 275 miles in 5 hours. at the same rate how long would it take him to drive 495 miles?

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