Evaluate each expression. (-3)-8 and -3-8

While scuba diving, rajeev dove to a depth of 12.6 feet below the surface of the water and then descended another 8.7 feet. what expression can be used to find rajeev's new position? 12.6 – 8.7 –12.6 – 8.7 –12.6 – (–8.7) 12.6 – (–8.7)

Which of the following is correct interpretation of the expression -4+13

Check all that apply. f is a function. f is a one-to-one function. c is a function. c is a one-to-one function.