Which expression is equivalent to 5(2x + 10)?

a. 2x + 15
b. 2x + 50
c. 7x + 15
d. 10x + 10
e. 10x + 50

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.