1.3.19 The selling price of a refrigerator, is $677.50. If the markup is 25% of the dealer's cost, what is the dealer's cost of the refrigerator?

$542

Step-by-step explanation:

Given the following :

Selling price of refrigerator = $677.50

Markup = 25% of dealers' cost

Dealers' cost of refrigerator =?

Selling price = Dealers' cost + markup

Markup = 25% of dealers' cost

Let dealers' cost = d

Hence,

Selling price = d + 25% of d

Selling price = d + 0.25d

Selling price of refrigerator = $677.50

Then,

$677.50 = d + 0.25d

$677.50 = 1.25d

d = $677.50 / 1.25

d = $542

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

step-by-step explanation:

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! : )

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