If i have 20 questions on my test and 65% is a passing grade how many do i need to get right brainlist to whoever answer first

In which source of water would a wave travel the fastest? o ice o cold o room temperature o hot mark this and return save and exit next

Estimate the area under the curve f(x) = 16 - x^2 from x = 0 to x = 3 by using three inscribed (under the curve) rectangles. answer to the nearest integer.

The serenity and the mystic are sail boats. the serenity and the mystic start at the same point and travel away from each other in opposite directions. the serenity travels at 16 mph and the mystic travels at 19 mph. how far apart will they be in 3 hours?