What is the opposite of the opposite of -3/8

How many credit hours will a student have to take for the two tuition costs to be equal? round the answer to the nearest tenth of an hour.

Identify the expression equivalent to 4(x + x + 7) − 2x + 8 − 4 by substituting x = 1 and x = 2.

Determine if the outside temperature is a function of the time of day or if the time of day is a function of temperature and explain why or why not.