In a bag of blue and yellow marbles, the ratio of blue marbles to yellow marbles is 3: 5. if the bag contains 60 yellow marbles, how many blue marbles are there?
a) 12
b) 24
c) 36
d) 48

Which equation matches the graph shown ?

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:

Tim open up a new saving account with a $50 deposit and plant to deposit $20 per week into the same account.write an expression to represent the total amount in his savings account.