I'm stuck in this problem. Can somebody help me?
After discontinuing all advertising for a certain product in 1994 ,the manufacturer noted that sales began to drop according to the model
s = 500,000/(1+.6e^(kt))
where s represents the number of units sold and t = 0 represents 1994. In 1996, the company sold 300,000 units
a) complete the model by solving for k
b) estimates sales in 1999
Thank you ...(really!)