Write the quadratic equation given the roots 3 and -7

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  y = x² +4x -21

Step-by-step explanation:

In standard form with a leading coefficient of 1, you have ...

  y = x² +bx +c

The coefficient 'b' is the opposite of the sum of the roots: -(3 +(-7)) = 4.

The constant 'c' is the product of the roots: (3)(-7) = -21.

So, the equation is ...

  y = x² +4x -21

required rate of return = 0.166 = 16.6%

step-by-step explanation:

under the capital asset pricing model (capm), the required or expected rate of return for a particular security or asset is given using the formula:

required rate of return = risk-free rate + beta*(market risk premium)

we are given that;

risk-free rate = 4% = 0.04

beta = 1.4

market risk premium = 9% = 0.09

we simply plug these values into the above formula;

required rate of return = 0.04 + 1.4*(0.09)

required rate of return = 0.04 + 0.126

required rate of return = 0.166 = 16.6%

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