Mr. wahnon

’

s vintage sound systems

emporium

has experienced a decrease

in its

sales sin

ce opening

in 2010.

since then, sales

of 8

-

track players

have

been decreasing at a

steady rate of 5.1

% per year. if

the emporium

sold 390

8

-

track players

in 2010

,

write an exponential function

to determine

the

number of

players

sold in 2013

and

give the amount to the nearest whole

unit

.

***2 separate answers