Betty donahue is choosing between two fitness centers. center a charges $375 per year for unlimited use of all facilities. center b charges a $35 sign up fee, a $12 monthly fee, and $5 per aerobics class. if betty goes to aerobics once a week, which club is least expensive for her to use for a year?

Center A would be the least expensive a year.
So,since center A charges a $375 for use of all facilities for a year, that on its own seems like a good offer.
Center B on other hand charges you for a sign up fee $35,a $12 monthly fee,and $5 per aerobics class, she would be paying more.
now let's see,

Center A charges $375 a year for all usage of their facilities.
Center B charges $35 for sign up, a $12 monthly fee, and $5 per aerobics class.

if she were to work out at center B for once a week for year. her total charge for that year would $439.
center A would only be $375. a year.

Hope I helped :-) bye bye.

778-550=228

Jupiter's average is 778km away from the sun and Mars is 550 less kilometers away from the sun than Jupiter. So you just subtract 778 to 550 which equals to 228. Therefore the average distance Mars is 228km away from the Sun

Hope This Helps!