pls help with these 2 :(

Compute and interpret the contribution margin ratio using the following data: sales, $5,000; total variable cost, $3,000. Contribution margin Contribution margin Contribution margin ratio Choose Denominator: Contribution margin ratio Choose Numerator: Contribution margin ratio SBD Phone Company sells its waterproof phone case for $90 per unit. Fixed costs total $162,000, and variable costs are $36 per unit (1) Determine the contribution margin per unit. per unit per unit Contribution margin per unit (2) Determine the break-even point in units. Choose Numerator Choose Denominator Break even units Break even units 0