were sold. Required: 1. What is Helmet-Pro's net income for last year? 2. What is Helmet-Pro's break-even revenue? In your computations, round the contribution margin ratio to two decimal places. $ 3. Suppose Helmet-Pro wants to earn before-tax operating income of $835,200. How many units must be sold? Round to the nearest whole unit. units units 5. Suppose the income tax rate rises to 35 percent. How many units must be sold for Helmet-Pro to earn after-tax income of $605,670 ? Round to the nearest whole unit. units