Marcus and tony work for lombardo's pipe and concrete. mr. lombardo is preparing an estimate for a customer. he knows that marcus lays a slab of concrete in 7 hours. tony lays the same size slab in 3 hours. if both work on the job and the cost of labor is $ 50.00 per hour, decide what the labor estimate should be.

Mrs. morton has a special reward system for her class. when all her students behave well, she rewards them by putting 3 marbles into a marble jar. when the jar has 100 or more marbles, the students have a party. right now, the the jar has 24 marbles. how could mrs. morton reward the class in order for the students to have a party?

The figure below shows rectangle abcd and the triangle eca on a coordinate plane. which of the following expressions represents the perimeter of triangle of triangle eca in units

The price of a visit to the dentist is calculated according to the formula 50+100n50+100n where nn is the number of cavities the dentist finds. on your last visit to the dentist, 22 cavities were found. what was the cost of your visit?