Sam created candy loot bags for halloween. he put 3 gummy bears, 2 lollipops, 5 mars bars and 7 sour keys in each bag. sam was not sure how many loot bags to create but remembered that last year, 2 kids arrived during the first hour and that the number of kids doubled every hour for the next 3 hours. how many pieces of candy did sam need in total? (based on last year’s trick or treater’s)

You drop a rubber ball off the roof of a 50 meter high building onto a paved parking lot. it bounces back up with every bounce, but not quite all the way back up to you. after the first bounce it bounces back only 80 percent of the distance it was dropped from. the pattern continues, meaning after every bounce it comes up to just 80 percent of the previous maximum height. so if before the first bounce the height is 50 meters, what height does the ball reach after the fifth bounce? round your answer to one decimal place and chose the correct response from the choices below:

Diane’s bank is offering 5% interest, compounded monthly. if diane invests $10,500 and wants $20,000 when she withdrawals, how long should she keep her money in for? round to the nearest tenth of a year.

Asource of laser light sends rays ab and ac toward two opposite walls of a hall. the light rays strike the walls at points b and c, as shown below: what is the distance between the walls?