please show formulas

P821 Betas Answer the questions below for assets A to D shown in the table.

Asset	Beta
A	0.50
B	1.60
C	20.20
D	0.90

What impact would a 10% increase in the market return be expected to have on each assets return?

What impact would a 10% decrease in the market return be expected to have on each assets return?

If you believed that the market return would increase in the near future, which asset would you prefer? Why?

If you believed that the market return would decrease in the near future, which asset would you prefer? Why?

Problem P8-21:
Parts a and b:
	Asset	Beta	Increase in Market Return	Impact of Increase	Decrease in Market Return	Impact of Decrease
	A	0.50	0.10		-0.10
	B	1.60	0.10		-0.10
	C	-0.20	0.10		-0.10
	D	0.90	0.10		-0.10
Part c:	If you were certain that the market return would increase in the near future, which
	asset would you prefer and why?
Part d:	If you were certain that the market return would decrease in the near future, which
	asset would you prefer and why?