Julie and mark went to a sale at Best Buy. Julie bought 3 DVDs and 2 CDs for $39. Mark bought 2 DVDs and 3 CDs for $49. Write a system of equations showing how much both Julie and mark spent. Then solve the system equations to find out how much each DVD and CD cost.

What two consecutive odd integers have a sum of -28

Which of these choices show a pair of equivalent expressions?

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.