Which of the following equations is not in function notation?

a. f(x) = x + 3

b. w(r) = 9r - 7

c. y = kx

d. c(w) = w/4

Find the number of positive three-digit even integers whose digits are among 9, 8, 7,5, 3, and 1.

1jessica's home town is a mid-sized city experiencing a decline in population. the following graph models the estimated population if the decline continues at the same rate. select the most appropriate unit for the measure of time that the graph represents. a. years b. hours c. days d. weeks

Find the area of the surface obtained by rotating the curve z=4e^2y from y = 0 to y =1 about the y-axis. the area is square units