###### Exercise73

The percentage of births in the U.S. delivered via C-section can be given by the following formula for the years since 1996.

\(\displaystyle{p = 0.8(y-1996)+21}\)

In this formula \(y\) is a year after 1996 and \(p\) is the percentage of births delivered via C-section for that year. What percentage of births in the U.S. were delivered via C-section in the year 2011?

of births in the U.S. were delivered via C-section in the year 2011.