A doll sold for ?$215 in 1975 and was sold again in 1989 for$488. Assume that the growth in the value V of the? collector'sitem was exponential.
?a) Find the value k of the exponential growth rate. AssumeVo=215.
?(Round to the nearest? thousandth.)
?b) Find the exponential growth function in terms of? t, where tis the number of years since 1975
?V(t)=
?c) Estimate the value of the doll in 2015.
?(Round to the nearest? dollar.)
?d) What is the doubling time for the value of the doll to thenearest tenth of a? year?
?(Round to the nearest? tenth.)
?e) Find the amount of time after which the value of the dollwill be ?$3037
?(Round to the nearest? tenth.)
