4. The value of a collectible toy is increasing exponentially. The two points on the graph
show the toy's initial value and its value 3 weeks afterward.
40
30
value in dollars
20
10
(3,10)
(0,5)
1 2 3 4 5 6 7 8 9 10
weeks since purchase
a.
Express the toy's value v, in dollars, as a function of time w, in weeks, after
purchase.
b.
Determine the toy's value 10 days after purchase.
L