Help The superSmarties are how many pionts ahead of DynaBrains

If the SuperSmarties are 650 and the DynaBrains are -150

Two cyclists 84 miles apart start riding toward each other at the samen time. one cycles 2 times as fast as the other. if they meet 4 hours later what is the speed (in miles) of the faster cyclists

If a flying disk is 139 meters in the air and travels at an average of 13 m/s how long is it in the air

Urgent question in mathematics. solve this to get 15 points[tex] {2}^{100} - {2}^{99} - {2}^{98} {2}^{2} - {2}^{1} - {2}^{0}[/tex]a) 0 b) 1 c) 2 d) 2^50