QUES: White x 20 5 doses envelopes freepromotion

correct the punctuation.

CORRECTED: White x 20 + 5 doses envelopes free-promotion

QUES: Do not miss any of your favorite events anymore

correct the punctuation.

CORRECTED: Do not miss any of your favorite events anymore.

QUES: Simplify the following expression giving your answers with positive exponents

correct the punctuation.

CORRECTED:
Simplify the following expression, giving your answers with positive exponents: