Rachel and Sean had the same number of marbles. Rachel gave away 20 marbles and Sean gave away 44 marbles. Rachel then had 3 times as
many marbles as Sean. How many marbles did Rachel and Sean each
have at first?

Find the domain of the following expression: 1/(√x)-2

The amount spent on food and drink by 20 customers is shown below what is the modal amount spent ?

Ian is in training for a national hot dog eating contest on the 4th of july. on his first day of training, he eats 4 hot dogs. each day, he plans to eat 110% of the number of hot dogs he ate the previous day. write an explicit formula that could be used to find the number of hot dogs ian will eat on any particular day.