Answer what is asked By early 2004, a cell phone company had sold about 3.4 million cell phones. From early 2004 to late 2019, cell phone sales were at a ratio given by V (t) = 4.5 t2 +6 t +0.45 million cell phones per year (0 st ? 15) Where t is the time in years since the beginning of 2004 a) Find an expression for total sales V (t) (millions of cell phones) up to time t. V (t) = TO b) Use your answer to part a) to estimate total cell phone sales (in millions) by the end of 2017.