How can I find equivalent expressions to the given expression?

Christine went shopping and bought each of her six six nephews a? gift, either a video costing? $14.95 or a cd costing? $16.88. she spent ? $ 97.42 97.42 on the gifts. how many videos and how many cds did she? buy?

Who long does it take to drive 150 miles at 45 miles per hour

Determine if the outside temperature is a function of the time of day or if the time of day is a function of temperature and explain why or why not.