Are the associative properties true for all integers?

Can someone me with this problem i don't understand i need

Which of the following would be a good name for the function that takes the weight of a box and returns the energy needed to lift it?

Olive's solar powered scooter travels at a rate of 30 miles per hour. what equation can she use to calculate her distance with relation to the time she traveled? h=hours m=miles 1. h=m+30 2. m=30h 3. m=h+30 4. h=30m