An employee of a grocery store is placing an order for soda. there are 8 varieties of soda and they are sold in cases. each case contains all the same variety of soda. the store will order 50 cases total. (a) how many ways are there to place the order? (b) how many ways are there to place the order if she orders at least 3 of each variety? (c) how many ways are there to place the order if she does not order more than 20 cases of coke?