Maroon Industries has a debt$-$equity ratio of $1\mathrm{.}3.$ Its WACC is $15$ percent, and its cost of debt is $8$ 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 $\mathrm{.}7?$

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$.,32.$

$\backslash$table$[[$a$.$ Cost of equity,$\%$