A DVD normally costs $22. This week it is on sale for 25% off the original price. What is the sale price of the DVD?

Write two subtraction equations that are equivalent to 5 + 12 = 17.

The swimming pool is open when the high temperature is higher than 20∘c. lainey tried to swim on monday and thursday (which was 33 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 33 days. write an inequality to determine the rate of temperature decrease in degrees celsius per day, d, from monday to thursday.

Atemperature of 1.64◦f corresponds to answer in units of ◦c.