Two young college graduates opened a chain of print shops Th

Two young college graduates opened a chain of print shops

The two young college graduates opened a chain of print shops. The chain expanded rapidly during the early 1990s and many new stores were opened. The number of print shops in operation during any year from 1990 to 2005 is given by the equation y = - 2.5x^2 +17.5x +189 where x is the number of years since 1990. How many print shops where there in 1993?

Solution

y = -2.5x^2 + 17.5x + 189 where x is the no. of years from 1990

In 1993 ---x = 3 ; plug x= 3 in y:

y = -2.5(3)^2 + 17.5(3) +189 = 219 print shops in 1993