Which type of graph is best for analyzing quantitative dependent and independent variables?

Find the vertex(use the completing the square method), findthe x- and y-intercepts, and sketch the graph offunction. y = 2x2 + 4x - 1

Ais useful when you need a simple machine to you separate two things. a. lever b. screw c. pulley d. wedge

If a refrigerator is a heat pump that follows the first law of thermodynamics, how much heat was removed from food inside of the refrigerator if it released 380j of energy to the room?