40 points if you answer and show your work Identify the two tables which represent quadratic relationships.

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?

In triangle △abc, ∠abc=90°, bh is an altitude. find the missing lengths. ah=4 and hc=1, find bh.

Given: circle o, cd is diameter, chord ab || cd. arc ab = 74°, find arc ca.