What are the coordinates of the vertex of the parabola with the equation y = x2 + 2x – 3?

Find the sum of the measure of the interior angles of a polygon of 9 sides ; of 32 sides

Omar is going on a road trip! the car rental company offers him two types of cars. each car has a fixed price, but he also needs to consider the cost of fuel. the first car costs $90 to rent, and because of its fuel consumption rate, there's an additional cost of s0.50 per kilometer driven.

Write an algebraic expression to match each statement a. four less than 8 times a number b. twice the difference of a number and six c. nine from a number squared