Suppose you have a data set that includes the values, 20, 30 and 50. if you add a fourth value to this data set, and after doing that the mean of the data set is 50, what was the value that you added? a. -10 b. 40 c. 50 or d. 100

Tom wants to order tickets online so that he and three of his friends can go to a water park the cost of the tickets is 16.00 per person there is also a 2.50 one-time service fee for ordering tickets online write an expression in term of n that represents the cost for n ordering tickets online

What is the number 321,000,000 in scientific notation? also what is the number? ?

What is the value of x in the following equation? -3x-2=2x+8