There are 75 students attending a field trip. each van will seat 8 students. how many vans will be needed?

In the diagram, ab is tangent to c, ab = 4 inches, and ad = 2 inches. find the radius of the circle.

The price of a visit to the dentist is \$50$50. if the dentist fills any cavities, an additional charge of \$100$100 per cavity gets added to the bill. if the dentist finds nn cavities, what will the cost of the visit be?

Solve the system of equations. x=-2y+1 and x+2y=9. show work