Cambridge Manufacturing Is Evaluating the Introduction of a New Product

Cambridge Manufacturing is evaluating the introduction of a new product that would have a unit selling price of $100. The total annual fixed costs are estimated to be $200,000 and the unit variable costs are projected at $60. Forecast sales volume for the first year is 8,000 units.
a) What sales volume (in units) is required to break even?
b) What volume is required to generate a net income of $100,000?
c) What would be the net income at the forecast sales volume?
d) At the forecast sales volume, what will be the change in the net income if fixed costs are: (i) 5% higher than expected? (ii) 10% lower than expected?
e) At the forecast sales volume, what will be the change in the net income if unit variable costs are: (i) 10% higher than expected? (ii) 5% lower than expected?
f) At the forecast sales volume, what will be the change in the net income if the unit selling price is: (i) 5% higher? (ii) 10% lower?
g) At the forecast sales volume, what will be the change in the net income if unit variable costs are 10% higher than expected and fixed costs are simultaneously 10% lower than expected?