The annual expenditure for cell phones and cellular service varies in part by the age of an individual. The average annual expenditure E a in $ for individuals of age a (in yr) is given in the table. a. Use regression to find a quadratic function to model the data. b. At what age is the yearly expenditure for cell phones and cellular service the greatest? Round to the nearest year. c. What is the maximum yearly expenditure? Round to the nearest dollar.
The annual expenditure for cell phones and cellular service varies in part by the age of an individual. The average annual expenditure E a in $ for individuals of age a (in yr) is given in the table. a. Use regression to find a quadratic function to model the data. b. At what age is the yearly expenditure for cell phones and cellular service the greatest? Round to the nearest year. c. What is the maximum yearly expenditure? Round to the nearest dollar.
Solution Summary: The author calculates the quadratic function by using regression. The average annual expenditure of individuals of various ages is given in the table.
The annual expenditure for cell phones and cellular service varies in part by the age of an individual. The average annual expenditure
E
a
in $
for individuals of age a (in yr) is given in the table.
a. Use regression to find a quadratic function to model the data.
b. At what age is the yearly expenditure for cell phones and cellular service the greatest? Round to the nearest year.
c. What is the maximum yearly expenditure? Round to the nearest dollar.
2. Suppose f(x) = 3x² - 5x. Show all your work for the problems below.
write it down for better understanding please
1. Suppose F(t) gives the temperature in degrees Fahrenheit t minutes after 1pm. With a
complete sentence, interpret the equation F(10) 68. (Remember this means explaining
the meaning of the equation without using any mathy vocabulary!) Include units. (3 points)
=
Elementary Statistics: Picturing the World (7th Edition)
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