CK12 - Trigonometry

b. x = -3, y = 1

a. or

or

b.

The equationswith positivecoefficientslook moreand morelikey=x^3 , as the coefficientgets larger. The
equationswith negativecoefficientshavelocalmaxesand mins.Decreasingthe coefficientincreasesthe
size of the” hill” and the “valley.”

a. Maximumprofitis $3850,with 90 unitssold.

b. 2.25 and 177.75.Theseare the break-evenpoints.When2 – 3 unitsare sold,the companyhas made
enoughmoneyto makeup for initialcosts.Afterselling177 units,the companyis no longerprofitable.