ALGEBRA Nick Chapp manages an Auto Film outlet that applies window film to automobile windows. He reported that
this past week, a total of 23 autos had window film applied.
Auto Film charges $189.99 for a four-door sedan and $159.99
for a two-door coupe. If Nick had total receipts for the week
of $4,189.77, how many four-door sedans had been serviced?
How many two-door coupes?

Your sister turned 35 today, and she is planning to save $60,000 per year for retirement, with the first deposit to be made one year from today. she will invest in a mutual fund that's expected to provide a return of 7.5% per year. she plans to retire 30 years from today, when she turns 65, and she expects to live for 25 years after retirement, to age 90. under these assumptions, how much can she spend each year after she retires? her first withdrawal will be made at the end of her first retirement year.

Experts are particularly concerned about four strategic metal resources that are important for the u.s. economy and military strength, and that must be imported. what percentage does the u.s. import? *

Why does the downward-sloping production possibilities curve imply that factors of production are scarce?