Helppp please I don’t get it

Which formula gives the area of a triangle? a=1/2(b+h)

The graph of the quadratic function shown on the left is y = –0.7(x + 3)(x – 4). the roots, or zeros, of the function are . determine the solutions to the related equation 0 = –0.7(x + 3)(x – 4). the solutions to the equation are x =

What is the value with a place of tenths in 907.456 1) 0 2) 6 3) 4 4) 5