Jeremy mows lawns during the summer in his neighborhood. Jeremy has made $800 mowing 35 lawns. He charged either $20 or $25 a lawn. Formulate and solve a system of equations to determine how many times Jeremy charged $20

Jeremy charged $20 15 times

Step-by-step explanation:

Let x represent the number of times Jeremy charged $20.

Let y represent the number of times Jeremy charged $25.

The total number of lawns that he mowed is 35. It means that

x + y = 35

He charged either $20 or $25 a lawn. The total amount that he made from mowing the lawns is $800. It means that

20x + 25y = 800- - - - - - - - -1

Substituting x = 35 - y into equation 1, it becomes

20(35 - y) + 25y = 800

700 - 20y + 25y = 800

- 20y + 25y = 800 - 700

5y = 100

y = 100/5

y = 20

x = 35 - y = 35 - 20

x = 15

answer: it is d

step-by-step explanation:

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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