Help me please Am I correct???​

Which is the best for showing percentages of different types of cars sold(gas hybrid , electric , other ) in the united states ?

Aplane flying horizontally at an altitude of 1 mile and a speed of of 500mih passes directly over a radar station. find the rate at which the distance from the plane to the station is increasing when it is 2mi away from the station.

Which compound is held together by the electrostatic force between two ions? a. co2 b. cci4 c. h2s d. mgf2