1. Which expression can be factored into the form (ax + b)(ax - b), where a and b are rational numbers?
4n2 - 81
2n2 - 49
2n2 + 49
4n2 + 81

At the many chips cookie company they are serious about the number of chocolate chips in their cookies they claim that each cookie hasn't c chips. if their claim is true there will be 200 chips in 10 cookies

Rectangle pqrs has length a and width 4b. the x-axis bisects ps and qr what are the coordinates of the vertices

Which shows the correct solution of the equation 1/2a+2/3b=50, when b=30?