V=T+ab How do you Solve for A

Which fraction below is equivalent to 10/12?

David is spreading mulch on a triangular area of his flower bed. the coordinates of the vertices of the area are (1, 3), (9, 3), and (4, 6). what is the area of the triangle if each square has an area of 3 square feet?

Zahra runs a 500-meter race at a constant speed. which graph shows her distance from the finish line during the race?