Im not good with graphs can you help me ???

Which of the following is considered to be a vector?               a.  temperature    b.  velocity    c.  time    d.  mass

Organelles are 1. responsible for producing power for the cell 2. tiny structures in the cell that carry out the cell's activities 3. responsible for digestion in the cell 4. found outside of the membrane

What is the average speed of a car that travels 40 mph for 1 hour and 60 mph in another hour?