PLEASE HELP
An advertising agency would like to add 4 new clients to their client base each week. Which type of function best models the number of clients the agency would like to add to their client base over time?
A. a linear model with a slope of 4
B. a linear model with a y-intercept of 4
C. an exponential model with a growth factor of 4
D. an exponential model with a y-intercept of 4