Mark rode his bicycle for 2 hours at 20 miles/hour to get from place a to place b. what is the distance between the two places

Find the zeros of each function. f(x) = 6x^2 - 7x - 20

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?

What is perpendicular to y=-1/2x+11