There are 15 rows of diamond rings in a case in the jewelry store. there are 24 rings in each row. another case has 12 rows of rings with a variety of colored stones and has 18 rings in each row.
how many more diamond rings than rings with colored stones are in the jewelry store?

49xy +34y - 72z. determine the degree of the polynomial

The swimming pool is open when the high temperature is higher than 20∘c. lainey tried to swim on monday and thursday (which was 3 days later). the pool was open on monday, but it was closed on thursday. the high temperature was 30∘c on monday, but decreased at a constant rate in the next 3 days. write an inequality to determine the rate of temperature decrease in degrees celsius per day, d, from monday to thursday.

Adam used 1072.4 gallons of water over the course of 7 days. how much water did adam use, on average, each day?