How many fourths are in 7 6/8

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.

See attachment below and find the equivalent of tan(∠qsr)

Olga bought a new skirt that cost $20. sales tax is 5%. how much did olga pay, including sales tax? 7.