Let A = {x1, X2, X3, X4, X5, X6, Xy, Xg), B = {y, Y2, Y 3, Y 4). The total number of function
F A B that are onto and there are exactly three elements x in A such that f(x) = y, is:
(a) 11088
(b) 10920
(c) 13608
(d) None of these

The administrator of a large assisted living facility wanted to know the average age of the residents living at the facility. he randomly selected 12 residents and determined their age, listed here: 80, 65, 75, 83, 68, 73, 88, 79, 94, 72, 79, 68 what's the average age of the sample of residents? a. 79 years old b. 68 years old c. 75 years old d. 77 years old

Last month, a 770 g box of cereal was sold at a grocery store for $3.10. however, this month, the cereal manufacturer launched the same cereal in a 640 g box, which is being sold at $2.50. what is the percent change in the unit price?

Suppose y varies directly with x. write a direct variation equation that relates x and y. then find the value of y when x=12 y=7 when x=3