Edward and Diana walked to the dock at 3 miles per hour, jumped into the boat, and motored to Dillion at 9 miles per hour. If the total distance was 15 miles and the trip took 4 hours in all, how far did they go by boat?

When only separate discreet points are graphed it is called?

What is the x-intercept and y-intercept of the equation 2x+1. 2o

Astudent must have an average on five test that is greater than it equal to 80% but less than 90% to receive a final grade of b. devon's greades on the first four test were 78% 62% 91% and 80% what range if grades on the fifth test would give him a b in the course? ( assuming the highest grade is 100%)