ON BLACK FRI YOU DECIDE TO GO SHOPPING. THE CHECK OUT LINES ARE LONG. 30 MINUTES AFTER THE STORE OPENS 12 PEOPLE HAVE GOTTEN THRU THE CHECK OUT. AFTER AN HOUR AND A HALF 42 PEOPLE HAVE GOTTEN THROUGH LINE.

WRITE AN EQUATION THAT REPRESENTS Y, THE TOATL NUMBER OF CUSTOMERS SERVRD, AS A FUNCTION OF X, THE MINUTES SINCE THE STORE OPENED. Sorry about the all caps ... cut and pasted it.

Question

ON BLACK FRI YOU DECIDE TO GO SHOPPING. THE CHECK OUT LINES ARE LONG. 30 MINUTES AFTER THE STORE OPENS 12 PEOPLE HAVE GOTTEN THRU THE CHECK OUT. AFTER AN HOUR AND A HALF 42 PEOPLE HAVE GOTTEN THROUGH LINE.

WRITE AN EQUATION THAT REPRESENTS Y, THE TOATL NUMBER OF CUSTOMERS SERVRD, AS A FUNCTION OF X, THE MINUTES SINCE THE STORE OPENED. Sorry about the all caps ... cut and pasted it.

anonymous · Answer

Think of the data as two points on a graph, (30,12) and (90,42) find the slope and then use point slope form to find the equation.