Awoman bought a horse for $800 and then sold it for $900. she bought it back for $400 and then sold it again for $600. how much did she gain or lose on these transactions?

Jalen charges $25.50 for every 3 hours of yard work he does for his neighbors. ralph charges $34 for every 4 hours of work that he does. who charges less? opinions: 1.they charge the same amount 2.jalen 3.ralph

Alex measured the length of an item to be 3.7 cm. the actual length is 3.5 cm. what is alex’s percent error?

Can anyone explain to me how to do this? anything will .