Help me please i can’t do word problems

You are on a cycling trip around europe with friends. you check the weather forecast for the first week. these are the temperatures for the week. sun mon tues wed thurs fri sat 16°c 20°c 24°c 28°c 28°c 23°c 15°c what is the mean temperature forecast for the week?

For f(x) = 3x+1 and g(x) = x2 - 6, find (g/f)(x)

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