Problema Solution
The total projected worldwide digital music reviews, R, and millions of dollars for the years 2005 through 2010 can be represented by the function R(x) =n170.7x2 +1373x + 1080 where is X and the number of year after 2005.
A. Find our(0) and R (5) and explain what each value represents
B. Find r =R (x-5)
C. Find r (5) and explain what this value represents
D. In the model r, what does x represent
E. Would there be an advantage in using the model r when estimating the projected revenue forgiving year instead of model R
Answer provided by our tutors
The revenue is described by the equation:
R(x) = 170.7x^2 +1373x + 1080
A. Find R(0) and R (5) and explain what each value represent:
R(0) = 170.7*0^2 + 1373*0 + 1080
R(0) = $1,080
The revenue in the year of 2005 was $1,080.
R(5) = 170.7*5^2 + 1373*5 + 1080
R(5) = $12,215.50
The revenue in the year of 2010 was $12,212.50.
B. Find r = R(x-5)
r = 170.7(x - 5)^2 +1373(x - 5) + 1080
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r = 107.70x^2 - 334x - 1517.5
C. Find r (5) and explain what this value represents
r(x) = 107.70x^2 - 334x - 1517.5
r(5) = 107.70*5^2 - 334*5 - 1517.5
r(5) = -495