1.Suppose a widget manufacturer has the total cost function C ( x ) = 31 x + 6256 and the total revenue function R ( x ) = 54 x . The number of widgets that the manufacturer must sell to break even is .

2.A company sells one of its products for $11.00 per unit. Its fixed costs are $770.00 per month, and the variable cost per unit is $4.00. (a) The contribution margin per unit is $ (rounded to the nearest cent). (b) The break-even volume, i.e., the level of output at break-even, is units per month. (If necessary, round up to the next whole number of units.) (c) The profit at a monthly output level of 145 units is $ (rounded to the nearest cent).