Write each form of the quadratic function. (3 points)
standard form:
vertex form:
intercept form:

Amerchant has coffee worth $60 a pound that she wishes to mix with 50 pounds of coffee worth $90 a pound to get a mixture that she will sell for $70 a pound. how many pounds of the & 60 coffee should be used?

Find the solution of this system of equation -7x+y=-20 9x-3y=36

Which of the following represents the range of the graph of f(x) below