Question

I have 5 questions for an exam study sheet I need help with

Answer 1

To find the average rate of change (average) between two years in the given situation you use the next formula:

`\begin{gathered} \text{Average}=(f(b)-f(a))/(b-a) \\ \\ Being\text{ a and b the years and f(a) and f(b) the sales in the corresponding year:} \\ \\ \\ \end{gathered}`
`\begin{gathered} \text{Betw}een\text{ }2014\text{ and 2}015\colon \\ a=2014 \\ b=2015 \\ \\ f(a)=364 \\ f(b)=394 \\ \\ \text{Average}=(394-364)/(2015-2014)=(30)/(1)=30\text{millions of dolllars/year} \end{gathered}`
`\begin{gathered} \text{Between }2014\text{ and 2017:} \\ a=2014 \\ b=2017 \\ \\ f(a)=364 \\ f(b)=418 \\ \\ \text{Average}=(418-364)/(2017-2014)=(54)/(3)=18\text{millions of dolllars/year} \end{gathered}`