Base Machinery showed the following operating budget for the next year. Complete parts (a) through (d) below Each scenario is independent $2,300,000 $1,000,000 770.000 Sales Fixed cost Total variable cont Total cost Not income 1,770.000 $530,000 (a) Calculate the contribution margin and contribution rate The contribution margin is $ (Round to the nearest dollar as needed) The contribution rate is (Round to four decimal places as needed) (b) How much does Base Machinery need to sell to break even? Base Machinery needs to sells (Round to the nearest dollar as needed (c) If the company has to spend $230,000 on marketing, how much does Base Machinery need to sell to break even