Me with this math question and show your work and you : )

Amount invested in account A: $3,250

Amount invested in account B: $1,750

Step-by-step explanation:

Let x = the amount invested in account A

     y = the amount invested in account B

So now you have 2 equations:

x + y = 5,000 ---> x = 5,000 - y

0.02x + 0.04y = 135

Substitute x = 5,000 - y into 0.02x + 0.04y = 135

0.02(5,000 - y) + 0.04y = 135

100 - 0.02y + 0.04y = 135

100 + 0.02y = 135

0.02y = 35

      y = 1750

      x = 5000 - 1750

      x = 3250

Amount invested in account A: $3,250

Amount invested in account B: $1,750

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18

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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