Find the vertex of the parabola given by the following equation.
y = x^2 + 10x + 33

a.) (5, 8)
b.) (-5, 8)
c.) (5, -8)
d. (-5, -8)

2people are trying different phones to see which one has the better talk time. chatlong has an average of 18 hours with a standard deviation of 2 hours and talk-a-lot has an average of 20 hours with a standard deviation of 3. the two people who tested their phones both got 20 hours of use on their phones. for the z-scores i got 1 for the chatlong company and 0 for talk-a-lot. what is the percentile for each z-score?

Write an equation for the function that includes the points (2,100)and (3,100)

If you can solve all of these i will give ! - 4% of 190 - 4% of 162.5 - 4% of 140 - a 4% increase from 155.1 - a 4% increase from 159.8