Chapter 5.5, Problem 27E

-2Fonslowcountyscho The average value of gold per ounce over time is modeled by V(†) = 45†+ 279, where t = time in years since 2000. According to this function, how many years will it take for the gold to be worth $639?

part b and d

A polling firm determines that the percent of likely voters who support a certain mayoral candidate can be represented by a function P(t) where t is measured in weeks since the candidate entered the race. Interpret the given equations, including units. (a) P(8)=38 (b) P'(8)=6 (a) Choose the correct answer below. ○ A. The percentage of likely voters to support the candidate 8 weeks after entering the race is 38%. ○ B. The percentage of likely voters to support the candidate 38 days after entering the race is 8%. ○ C. The percentage of likely voters to not support the candidate 38 days after entering the race is 8%. ○ D. The percentage of likely voters to not support the candidate 8 weeks after entering the race is 38%.