Problem $16-12$ Calculating WACC $[$LO$1]$

Solar Industries has a debt$-$equity ratio of $1\mathrm{.}4.$ Its WACC is $7\mathrm{.}6$ percent, and its cost of debt is $5\mathrm{.}3$ percent. The corporate tax rate is $24$ percent.

a$.$ What is the company's cost of equity capital? $($Do not round intermediate calculations and enter your answer as a percent rounded to $2$ decimal places, e$.$g$.,32\mathrm{.}16.)$

b$.$ What is the company's unlevered cost of equity capital? $($Do not round intermediate calculations and enter your answer as a percent rounded to $2$ decimal places, e$.$g$.,32\mathrm{.}16.)$

c$-1.$ What would the cost of equity be if the debt$-$equity ratio were $2?($Do not round intermediate calculations and enter your answer as a percent rounded to $2$ decimal places, e$.$g$.,32\mathrm{.}16.)$

c$-2.$ What would the cost of equity be if the debt$-$equity ratio were $1?($Do not round intermediate calculations and enter your answer as a percent rounded to $2$ decimal places, e$.$g$.,32\mathrm{.}16.)$

c$-3.$ What would the cost of equity be if the debt$-$equity ratio were zero? $($Do not round intermediate calculations and enter your answer as a percent rounded to $2$ decimal places, e$.$g$.,32\mathrm{.}16.)$

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