What percent of 180 is 30?

Dylan and dusty plan to take weekly surfing lessons together. if the 2-hour lessons are $20 per person and they plan to spend $100 each on new surfboards, what is the maximum number of lessons the two can take if the total amount spent for lessons and surfboards is at most $480?

2y= 3 2 x−2 y = − 1 3 x + 1 y=− 3 1 x+1

If the discriminant if a quadratic equation is 4 which statement describes the roots?