HELP PLEASE ASAP I MIGHT FAIL MY TEST What is the area of the circle?
a) 18.84 square kilometers
b) 113.04 square kilometers
c) 37.68 square kilometers
d) 84 square kilometers

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?

The rectangle shown has a perimeter of 108 cm and the given area. its length is 6 more than five times its width. write and solve a system of equations to find the dimensions of the rectangle.

Prove sin2a + cos2a - 1 / sin2a + cos2a + 1 = 1 - tana / 1 + cota