HELP PLEASE. y intercept - starting point

vertex : x value: time of height, y value: max height

zeros :
positive zeros : time the object hits the ground

Solve 3x-18=2y and 5x-6y=6 by elimination show work

Acar started driving from city a to city b, distance between which is 620 miles, at a rate of 60 mph. two hours later a truck left city b and started moving towards city a at a rate of 40 mph. how many hours after the truck's departure will the two meet?

What is the volume of the cone to the nearest cubic millimeter? (use π  = 3.14) a) 46 mm3 b) 128 mm3 c) 183 mm3 d) 275 mm3 diameter = 5 mm height = 7 mm how do you do this problem step by step?