You have not provided sufficient information.
But here is a tool.
http://www.moneychimp.com/calculator/compound_interest_calculator.htm
It is simplified. You can't simplify farther.
Answer:
After one unit is sold, Becky will break-even.
Step-by-step explanation:
Giving the following information:
Fixed costs= $1
Unitary variable cost= $21
Selling price= $22
<u>The break-even point is the number of units required to cover the fixed costs after deducting from the selling price the variable components. At this point, net income is zero</u>.
Break-even point in units= fixed costs/ contribution margin per unit
Break-even point in units= 1 / (22 - 21)
Break-even point in units= 1
After one unit is sold, Becky will break-even.
Look at the picture.
The base of the ladder is 6.47 feet from the house.
Would it not just be y = 12 - 7 or y = 5, I apologize if I’m missing the point.