How do you determine if the vertex is a maximum or a minimum from the quadratic equation

How many different ways can you make change for $.50 using only nickels,dimes, and quarters?

If 3x+8=3x+8 is it one solution or no solution

The owners of four companies competing for a contract are shown in the table below. if a report is released that advocates company b, which of the people having funded the report should result in the most skepticism? company owner of company company a jake adams company b company c company d debby smith henry rose rhonda baker o a. jake adams o b. rhonda baker o c. debby smith o d. henry rose