Which is the simplified form of the expression? 9(r + 3) -1/2 (4r - 16 )

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 =

Express in the simplest form: (x^2+9x+14/x^2-49) / (3x+6/x^2+x-56)

How many kilograms of a 5% salt solution and how many kilograms of a 15% salt solution must be mixed together to make 45kg of an 8% salt solution?