The net revenue for a certain car company (in billions of dollars) between the years 2007 and 2012 is approximated by r(x)=-0.739x to the 3power +25.6x to the 2power-150.4x+423.8, where x =7 corresponds to the year 2007

step-by-step explanation:

in the absence of parentheses, i will have to make some assumptions:   i interpret your (3x+5/y^6)(4y^3/5)​ to mean:

3x + 5     4y^(3/5)       (3x + 5)(4)

* =

    y^6             1               y^(6-3/5)

if this is not what you expected, repost your question using parentheses to indicate whether you meant

4y^3

    or   4y^(3/5)

    5

question is incomplete.