Pl help it’s for a grade I will give you if right

Idon’t understand this.. will someone ? will mark brainliest along with 20 points.

Two friends are reading books. jimmy reads a book with 21,356 words. his friend bob reads a book with one-and-a-half times as many words. which expression represents the number of words bob reads?

Question 14 (1 point) larry deposits $15 a week into a savings account. his balance in his savings account grows by a constant percent rate.