What is (5a2 − 3a + 8) + (−4a2 − 1) + (15a + 11) expressed in its simplest form?

How do you answer this question? (step by step)

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.

Lydia collected two sets of data one set of data shows an outlier. which set has an outlier, and which number is the outlier?