HELP ASAP! I just need the answers but if you show work much appreciated.

Including 6% sales tax, an inn charges $135.68 per night. find the inns nightly cost

Consider circle c with angle acb measuring 3/4 radians.if minor arc ab measures 9 inches, what is the length of the radius of circle c? if necessary, round your answer to the nearest inch.

Determine if the solution set for the system of equations shown is the empty set, contains one point or is infinite. x + y = 5 x + y = 7 {} 1 solution infinite