Over a three-year period, the value of a vintage VHS tape of “Charlene’s Greatest Hits” decreased from $20 to $1.99. Homework Help ✎
What were the annual multiplier and annual percent decrease?
Write the equation of a function that describes this situation.
Make a sketch of the graph of the function and a table of values for the first 5 years.
$20(m)(m)(m) = $1.99
The multiplier is 0.463.
How can you use that to find the percent decrease?
Use the starting value and multiplier you found in part (a) to write the equation.
y = 20(0.463)x