Two young college graduates opened a chain of print shops.

Question

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 equals negative 2.5 x squared plus 27.5 x plus 116y=−2.5x2+27.5x+116 where x is the number of years since 1990. How many print shops where there in 19951995??

Answer 1

y = -2.5x² + 27.5x + 116            supplied formula

 

x = 1995 - 1990

x = 5

 

Substitute 5 for x and solve.