Which polynomial is equivalent to ( y+ 10)^2?

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.

Y= a(x-3)squared-1 what is the value of a

Which equation is represented by the graph below?