During a 7-year period, the amounts (in millions of dollars) spent each year on buying new vehicles n and used vehicles u by united
states residents are modeled by the equations
n = -0.028+3 +0.06+2 +0.17 +17
u = -0.3862 +1.50 +42
wheret
1 represents the first year in the 7-year period,
a. write a polynomial that represents the total amount spent each year on buying new and used vehicles in the 7-year period.
the polynomial is
b. how much is spent on buying new and used vehicles in the fifth year?
$ million