SIMPLY I don’t get this either so please help !

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

Athermometer is removed from a room where the temperature is 70° f and is taken outside, where the air temperature is 10° f. after one-half minute the thermometer reads 60° f. what is the reading of the thermometer at t = 1 min? (round your answer to two decimal places.) ° f how long will it take for the thermometer to reach 30° f? (round your answer to two decimal places.)

Which statement correctly describes the relationship between frequency and wavelength?