Lead Paint Lead was banned as an ingredient in most paints in 1978, although it is s...

Lead Paint Lead was banned as an ingredient in most paints in 1978, although it is still used in some specialty paints. Lead usage in paints from 1940 through 1980 is reported in the table.

a. Compare the fit of a quadratic model and an exponential model for lead usage. Which model fits the data better?

b. Align the input data so that x = 0 in 1935. Compare the fit of a quadratic and a log model for lead usage. Which model fits the data better?

c. Because lead usage in paint was generally banned in 1976, which model best fits the end behavior?

d. Write the quadratic model for lead paint usage.