Spencer wants to burn 450 calories while biking. Biking burns about 10 calories per minute. When Spencer goes biking, he usually plans to stop and rest for about 15 minutes. Complete the equation below to find the total number of minutes (including rest) that Spencer should plan to be out biking. Use m to represent the total minutes.
(please add the numbers into these blanks: # (# - #) = # #=blanks)