(3) I have 25 coins x of them are R5 coins and the rest are R2 coins
An expression in terms of
for the number of R2 coins I have
is​

R2 = 25 - x

Step-by-step explanation:

x + R2 = 25

=> R2 = 25 - x

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%

3 3 6, because in every triangle the longer side is always shorter than the sum of the other two