Is the y-coordinate of the vertex of f(x)=-x^2+6x+7, f(3)?

Asurvey of 2,000 doctors showed that an average of 3 out of 5 doctors use brand x aspirin.how many doctors use brand x aspirin

The function below show how much jayna and hannah charge for babysitting. which statement best compares the two plants?

Tom travels between the two mile markers shown and then finds his average speed in miles per hour. select the three equations that represent this situation.