Sam bought a total of 25 hamburgers and hot dogs. his total bill was $70.50. if each hamburger cost $3 and each hot dog cost $2.50, how many hot dogs did sam buy?

What is the value of the expression below? (81^2)^1/8

Determine the relationship of ab and cd given the following points

Koji is installing a rectangular window in an office building. the window is 823 feet wide and 534 feet high. the formula for the area of a rectangle is a=bh. what is the area of the window? enter your answer as a mixed number in simplest form in the box. $$ ft2