How many different ways can 8 different kinds of gummy bears be lined up in a row of 4?

Which ordered pair (c,d) is a solution to the given system of linear equations- c+2d=13 -9c-4d=-15

If x is 6, then 7x= a. 13 b. 42 c. 42x d. 76

The amount spent on food and drink by 20 customers is shown below what is the modal amount spent and the median amount spent? 40 25 8 36 18 15 24 27 43 9 12 19 22 34 31 20 26 19 17 28