Jennifer has decided to start doing crunches as part of her daily exercise routine and is using the bar chart below to keep track of how many she has done each day. How many crunches will she do on day n?

What is the simplified form of square root of 400 to the 100th power ?

Novak gives 9 packs of paper to a group of 5 students. if the group shares the paper equally how many packs of paper does each student get. write the a answer as a mixed number

Abag contains 5 red marbles , 6 blue marbles and 4 green marbles. susie selects a marble and returns it to the bag before selecting another marble. if susie selects a red marble 6 out of 20 times, what is the experimental probability that the next marble she selects will be a red marble ?