HELP ME i dont understand this and it’s a test please help i have to pass this class

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?

Dylan is evaluation the expression 13+19+7+10 at one step in his work, dylan rewrites the equation as 13+7+19+10 which property of addition must dylan have used when he evaluated the expression?

Quiz 3: volume of solidsnates wrapping a present the gift is a night rectangular prism with a base measuring 15 inches by 12 inches and a height of 8 inches what is the surface area of the git?