Select the correct answer. Amber owns a small cupcake business. She can represent the revenue from her business as x2 + 13x - 300.
Here, x represents the number of days in business. Which statement best describes the constant term?
O a cost of operation of $13 per day
O a profit of $13 per cupcake sold
O a startup cost of $300
O a total profit of $300

The figure shows triangle def and line segment bc, which is parallel to ef: triangle def has a point b on side de and point c on side df. the line bc is parallel to the line ef. part a: is triangle def similar to triangle dbc? explain using what you know about triangle similarity. part b: which line segment on triangle dbc corresponds to line segment ef? explain your answer. part c: which angle on triangle dbc corresponds to angle f? explain your answer. asap