During the past 10 years, the amount of money, M (in billions of dollars), spent in North America by car dealerships advertising their product can be modeled by the equation M = 0.15e^0.3t + 0.78. In what year was about $3 billion (M = 3) spent by car dealerships in advertising?
A. t = 9
B. t = 10
C. t = 8
D. t = 3
Please DON'T post your question twice. See the answer under your 1st question below.
Is there a problem with your posting things??? This question is posted FOUR times !!
