Out-of-pocket spending in the United States for health care increased between 2008 and 2012. The function (x)

Out-of-pocket spending in the United States for health care increased between 2008 and 2012. The function ƒ(x) = 7446e^0.0305x models average annual expenditures per household, in dollars. In this model, x represents the year, where x = 0 corresponds to 2008.

(a) Estimate out-of-pocket household spending on health care in 2012 to the nearest dollar.

(b) In what year did spending reach $7915 per household?