15= x over 6 - 1 a. x = 96 b. x = 90 c. x = 84 d. x = 80

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?

Graph the equationy=x^2 -[tex]y = x^{2} - 2[/tex]

Simplify each expression for 18, 20, and 21