To calculate the annual income and hourly wage after taxation, multiply them by one minus the tax rate expressed as a decimal: Nethourlywage=Grosshourlywage×(1−Taxrate)Nethourlywage=Grosshourlywage×(1−Taxrate) Netannualsalary=Grossannualsalary×(1−Taxrate)Netannualsalary=Grossannualsalary...