5,210/17 pls help me i tried but i forgot what to do

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

Sam is a waiter at a local restaurant where he earns wages of $5 per hour sam figures that he also eams about $3 in tips for each person he serves sam works 6 hours on a particular day. if n represents the number of people sam serves that day, which of the following functions could sam use to figure ehis total earings for the do o a. en) = 30 o b. en) = 5n+ 18

What is mean median mode and range?