NEED HELP PLEASE? #1. When solving a quadratic equation, what do the x-values stand for as it relates to plotting the graph of the equation?

#2. When solving by using the Quadratic Formula, what are the steps to follow?

#3. Sketch the graph of y=-2x^2+x+1 using your graphing calculator. What are the x-intercepts of this graph?.

Which function has the smallest y-intercept value

Find the measure of the interior angles of the following regular polygons: a triangle, a quadrilateral, a pentagon, an octagon, a decagon, a 30-gon, a 50-gon, and a 100-gon.

An initial investment of $100 is now valued at $150. the annual interest rate is 5%, compounded continuously. the equation 100e0.05t = 150 represents the situation, where t is the number of years the money has been invested. about how long has the money been invested? use your calculator and round to the nearest whole number. years