Identifying the Parts of an Angle

Find the sum of 4x^{2} -4+6 and -7^{2} +3x+1

Solve: 3x+y=6 4x-2y=18 show all work !

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