Miss Hetzel has 10 students. For Teacher Appreciation Day, each of her students gave her 4 flowers. She accidentally dropped 15 flowers when leaving for the day. How many flowers did she have left?

What is the axis of symmetry of the function f(x)=-(x+ 9)(x-21)

Why is it so easy to buy on impulse and overspend with a credit card? what could you do to counteract this tendency?

Sophia wrote an equation to represent the revenue of a movie theater for one day. she let x represent the number of child tickets sold and y represents the nunver of adult tickets sold. if a child ticket cost $4, an adult ticket cost $6, and the total revenue for the daybwas $420, which equation could sophia use to represent the number of chikd and adult tickets that were sold?