4 The value of a collectible toy is increasing exponentially The two po graph show the toy s initial value and its value 3 weeks afterward Value in Dollars 40 2 30 20 10 3 10 0 5 1 2 3 4 5 6 7 8 9 10 Weeks Since Purchase t 1 Express the toy s value t in dollars as a function of time w in weeks after purchase 3 so Write an expression to represent the toy s value 10 days after purchase