$290, 12.5%, 6 months =?

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

This is a map of the mars exploration rover opportunity predicted landing site on mars. the scale is 1cm : 9.4km. what are the approximate measures of the actual length and width of the ellipse? i mostly need to know how to set it up : )

Present age of man is 45 years, 5 years back his age was 4 times age of his son what is present age of his son?