Evaluate 2x^2-1 when x=3 a) 5 b) 17 c) 25 d) 35

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?

With both problems. a. s.a. p directions on photo ^

Find the value of x in the diagram below. select the best answer from the choices provided