A paper plane is thrown from a window 20 feet from the ground. The formula h(t)=-4x^(2)+24x+20 gives the planes height over time. Rewrite the equation in an equivalent form that would reveal the maximum.

Amerchant has coffee worth $60 a pound that she wishes to mix with 50 pounds of coffee worth $90 a pound to get a mixture that she will sell for $70 a pound. how many pounds of the & 60 coffee should be used?

Your food costs are $5,500. your total food sales are $11,000. what percent of your food sales do the food costs represent?

Graph the system of inequalities presented here on your own paper, then use your graph to answer the following questions: y < 4x − 8 y is greater than or equal to negative 5 over 2 times x plus 5 part a: describe the graph of the system, including shading and the types of lines graphed. provide a description of the solution area. (6 points) part b: is the point (5, −8) included in the solution area for the system? justify your answer mathematically. (4 points)