A quadratic function y = f(x) is plotted on a graph and the vertex of the resulting parabola is (5,3). What is the vertex of
the function defined as g(x) = -f(x) + 5?

The graph below represents the number of dolphins in a dolphin sanctuary. select all the key features of this function.

What values of x satisfy the inequality x^2-9x< 0? how is your answer shown on the graph?

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?