the janitor at a school discovered a slow leak in a pipe. the janitor found that it was leaking at a rate of 4 fluid ounces per minute. how fast was the pipe leaking in gallons per hour

Which statement is true about a number and its additive inverse? a. their product is always one. b. their sum is always one. c. they are always reciprocals of each other. d. their sum is always zero.