posted by Jin on .
For 1980 through 1990, the average weekly earnings (in dollars)for workers in the United States can be modeled by E= 14.5t + 270, where t is the number of years since 1980. Approximate the average weekly earnings in 1980 and 1990.
I am having trouble understanding what I have to do for this problem. Please help me as soon as possible! Thanks.
Year t Earnings(15.5t+270)
1980 0 270
1981 1 285.5
1982 2 ....
So fill in the table, or just use the formula. The key is to compute t. t=Year-1980