Problema Solution
Sales of SUVs in the US for the years 1990-1999 can be modeled by the quadratic function below: f(x)= 0.016x^2 + 0.124x + 0.787
Here x=0 represents 1990, x=1 represents 1991 and so on. How many sales were in 1995?
Answer provided by our tutors
x=0 represents 1990 and f(0) = $0.787 millions
x=1 represents 1991 and f(1) = $0.911 millions
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x = k represents 1990 + x
because 1995 = 1990 + 5 we have x = 5 and we need to find f(5)
f(5) = 0.016*5^2 + 0.124*5 + 0.787
f(5) = $1.807 millions
The sales in 1995 are $1.807 millions.