Ricardo throws a stone off a bridge into a river below.
The stone's height (in meters above the water), 2 seconds after Ricardo threw it, is modeled by
w(x) = -5(x-8)(x + 4)
How many seconds after being thrown will the stone reach its maximum height?
seconds

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.

Askate shop rents roller skates as shown on the table below. which graph and function models this situation?

The price of a visit to the dentist is calculated according to the formula 50+100n50+100n where nn is the number of cavities the dentist finds. on your last visit to the dentist, 22 cavities were found. what was the cost of your visit?