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what is the equation of the parabola
(parabola and possible answers in picture)

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10

Which function has the domain x> -11?

Monitors manufactured by tsi electronics have life spans that have a normal distribution with a standard deviation of 1800 hours and a mean life span of 20,000 hours. if a monitor is selected at random, find the probability that the life span of the monitor will be more than 17,659 hours. round your answer to four decimal places.