(Solved): 1. The number of cellular phones (in millions) in use in the United States is increasing exponentia ...

1. The number of cellular phones (in millions) in use in the United States is increasing exponentially and can be modeled by the function $N(t)=1.5+0.3e^{0.49t}$, where $t$ is the number of years since 1990. Use this function to answer the following questions. If necessary, round answers to two decimal places. a). Evaluate $N(5)$ and explain what it means. Be complete. b). Use algebra to determine in what year the number of cellular phones in use reached 999 (8) million. Show all work.