What are the coordinates of the vertex of the parabola described by the equation below?
y=-5(x + 2)2 + 7
A. (-7,-2)
B. (2,-7)
C. (7,2)
D. (-2,7)

Look at this pattern ; 1,4,9, number 10000 belongs in this pattern . what’s the place of this number?

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.

One positive integer is 2 less than another. the product of the two integers is 24. what are the integers?