Maroon Industries has a debt$-$equity ratio of $1\mathrm{.}4.$ Its WACC is $9$ percent, and

its cost of debt is $4$ percent. There is no corporate tax.

a$.$ What is the company's cost of equity capital?

Note: Do not round intermediate calculations and enter your answer as a

percent rounded to $2$ decimal places, e$.$g$.,32\mathrm{.}16.$

b$-1.$ What would the cost of equity be if the debt$-$equity ratio were $2?$

Note: Do not round intermediate calculations and enter your answer as a

percent rounded to the nearest whole number, e$.$g$.,32.$

b$-2.$ What would the cost of equity be if the debt$-$equity ratio were $\mathrm{.}5?$

Note: Do not round intermediate calculations and enter your answer as a

percent rounded to $2$ decimal places, e$.$g$.,32\mathrm{.}16.$

b$-3.$ What would the cost of equity be if the debt$-$equity ratio were zero?

Note: Do not round intermediate calculations and enter your answer as a

percent rounded to the nearest whole number, e$.$g$.,32.$