standard_description: Derive the formula A = 1/2 ab sin(C) for the area of a triangle by drawing an auxiliary line from a vertex perpendicular to the opposite side.
problem_activity: A store is having a sale to clear out merchandise. If you spend between $0 and $100, you can take 15% off of your total. If you spend over $100, you can take 25% off of your total.
Write an equation to represent your discounted total if you spend between $0 and $100.
Write an equation to represent your discounted total if you spend over $100.
Which graph best represents the situation?
[IMG]


aligns: no