David drove for 3 hours at a rate of 50 miles per hour. for 2 hours at 60 miles per hour and for 4 hours at a rate of 70 miles er hour. what was his constant-speed for the whole journey?

Zahra was given two data sets, one without an outlier and one with an outlier. data without an outlier: 15, 19, 22, 26, 29 data with an outlier: 15, 19, 22, 26, 29, 81

Cody started biking to the park traveling 15 mph, after some time the bike got a flat so cody walked the rest of the way, traveling 4 mph. if the total trip to the park took 6 hours and it was 46 miles away, how long did cody travel at each speed? solve using rate times time= distance

Which expression do you get when you eliminate the negative exponents of 4a^2 b^216a^-3 b