Is this equation an identity?

z = -10 − z

Either enter an exact answer in terms of \piπ or use 3.143.14 for \piπ and enter your answer as a decimal.

Aparking garage charges $1.12 for the first hour and 0.50 for each additional hour. what is the maximum length of time tom can park in the garage if we wishes to play no more than $5.62

Type the next three numbers in a sequence 80, 90, 85, 95, 90, 100, 95, 105