John is a lamp salesman. He earned commissions of $24,$28,$21,and $30 on the lamps he has sold this week. if he sells one more this week, how much commissions must he earn to average $25 in commissions on lamps sold this week?

its kind of blurry. can you put a clearer pic?

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answer: b. f(x) = (x + 2)^3 (x^2 - 7x + 3)^4

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polynomials always have as many roots as their order. this is a 4th order polynomial- hence 4 roots!

complex roots of polynomials always come in pairs. the quadratic equation has the "+/-" in that will alwaysgenerate m+ni amd m-ni, so 7-2i must be a root of this polynomial equation.

the order of the numerator and denominator are both 2. so the horizontal asymptote is y=a2/b2 =7

verticle asymptotes are the forbidden x-values. f(x) becomes undefined at x=-3 because this value will cause a zero denominator.

a graph of r(x) will have vertical asymptotes at ±1 because these values will make the denominator zero. so the domain of the function cannot include ±1.

you 're wlecome! : )

cretdit to source

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