Y is inversely proportional to x.

When y = 7, x = 9

Work out an equation connecting y and x.

Work out the value of y when x = 21

see explanation

Step-by-step explanation:

Given that y is inversely proportional to x then the equation relating them is

y = ← k is the constant of proportionality

To find k use the condition that y = 7, x = 9

k = yx = 7 × 9 = 63, thus

y = ← equation of proportion

When x = 21, then

y = = 3

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%