In addition to quadratic and exponential models, another common type of model is called a power model. Power models are models in the form
Use the PwrReg command on your graphing calculator to find a power model relating
Identify each function as modeling either exponential growth or exponential decay. What percent of increase or decrease does the function model?
Enter the data for Spendco into your graphing calculator. Enter the years since 2000 as the x-values and the corresponding daily hits in thousands as the y-values. a. To find the exponential equation that models the data, use the exponential regression feature of your calculator. The calculator should return values for a and b. Write these values below, rounding to the nearest hundredth. a= b. Write the exponential equation in the form
c. Use the exponential equation to predict the number of daily hits for Spendco in 2015.
Solve the equation. Round your answers to the nearest hundredth.
If the roots of a quadratic equation: