Over past 2 decades, # of computers in schools has been increasing. The data shows the # of students per computer in U.S public schools. Assume that eventually, there will be 1 student per computer.

School year=Students per computer

1983-84= 125

1984-85= 75

1985-86= 50

1986-87= 37

1987-88= 32

1988-89= 25

1989-90= 22

1990-91= 20

1991-92= 18

1992-93= 16

1993-94= 14

1994-95= 10.5

1995-96= 10

1996-97= 7.8

1997-98= 6.1

1998-99= 5.7

1999-2000= 5.4

a. Find an exponential function in the form y=abxthat models the data. Let x be the number of school years after the 1983-84 school year.

Here is how I worked the problem:

y=y b(x-x)

(x,y)=(1, 75)

(x,x)=(0, 125)

75=125b1-0

.6=b

y=125(.6)x

Did I solve this question right?

~thanks!