Teresa needs to save $25.50 to go to the movies this weekend she currently has $3 if Teresa makes 7.50 dollars an hour babysitting how many hours does he need to babysit this week

List the elements of the set in roster notation. (enter empty or ∅ for the empty set.) {x | x is a letter in the word hippopotamus}

Which shows the correct solution of the equation 1/2a+2/3b=50, when b=30?

Ametal rod needs to be 9 feet and 5.5 inches in length. the sections of the poles being used are each 1 foot and 10.5 inches long. how many 1ft 10.5in sections would be needed to complete the 9ft 5.5in metal rod? and how many inches of material will be left?