Maricopa's Success scholarship fund receives a gift of $ 90,000. The money is invested in stocks, bonds, and CDs. CDs pay 4.25% interest, bonds pay 4.3% interest, and stocks pay 8.6% interest. Maricopa Success invests $30,000 more in bonds than in CDs. If the annual income from the investments is $5,153 , how much was invested in each account?

Let us assume Maricopa invested X amount in CDs, then she would have invested X+30000 in bonds

We know Amount Invested in CDs + Amount invested in Bonds + Amount Invested in Stocks = 90000

As we earlier discussed Amount Invested in CDs = X, Amount Invested in X + 30000 putting these in above equation

X + X + 30000 + Amount invested in stocks = 90000

2X+ 30000 + Amount invested in stocks = 90000

Taking 2X + 30000 to right hand side of equation  

Amount invested in stocks = 90000 - 30000 - 2X

= 60000 - 2X

Now Interest on CDs = 4.25 % * Amount invested in CDs = 4.25/100 * X =  0.0425 X

Interest on bonds = 4.3/100 % * Amount invested in Bonds = 4.3/100 * (30000 + X)= 1290 + 0.043X  

Interest on stocks = 8.6/100% * Amount invested in stocks = 8.6/100 * (60000 - 2X) = 5160 - 0.172X

Total Interest = 5153

Adding all the interest calculated

0.0425X + 1290+ 0.043X + 5160 - 0.172X = 5153

(0.0425X + 0.043X - 0.172X) + (1290+5160) = 5153

-0.0865 X + 6450 = 5153

0.0865 X = 6450 - 5153

0.0865 X = 1297

X = 15000

CDs amount = $15000

Bonds amount = $45000

Stocks amount = $30000

answer:

what is your question that you ask

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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