A diver is 15 feet below sea level. The diver then swims up 15 feet to the surface. Which expression shows the correct sum?(1 point)
Responses
(−15)+15=30
left parenthesis negative 15 right parenthesis plus 15 equals 30
(−15)+(−15)=−30
left parenthesis negative 15 right parenthesis plus left parenthesis negative 15 right parenthesis equals negative 30
(−15)+(−15)=0
left parenthesis negative 15 right parenthesis plus left parenthesis negative 15 right parenthesis equals 0
(−15)+15=0