This video explains the situation we are trying to minimize or maximize and the role of the input and output variables. Then the process of finding the location and value of the requested amount is…

This shows how to find the vertex of a parabola and then calculate the matching points one unit and two units to the left and right of hte axis of symmetry

This demonstrates how to write a wholel number as a fraction, then how to reduce t he two fractionis before you multiply the numerators and denominators together to get the result.