If "a" is taken away from the sum of "b" and 7 we get 21

Alicense plate is to consist of 44 digits followed by 55 uppercase letters. determine the number of different license plates possible if the first and second digits must be? odd, and repetition is not permitted.

F(n + 1) = f(n) – 8. if f(1) = 100, what is f(6)?

Which of the following quartic functions has x = –1 and x = –2 as its only two real zeroes?