Explain how you can locate the vertex, V, of the parabola with the given focus and directrix. Write the coordinates of the vertex.

Average salary for a medical assistant is $31,220 which is a 20% income tax bracket how much money would they pay in income tax?

Maria walks a round trip of 0.75 mile to school every day. how many miles will she walk in 4.5 days

Last month, a 770 g box of cereal was sold at a grocery store for $3.10. however, this month, the cereal manufacturer launched the same cereal in a 640 g box, which is being sold at $2.50. what is the percent change in the unit price?