The set of cards shown contains both red and black cards. How many cards must be red so the probability of drawing a red card at random is 2/5?

The system of equations graphed below has how many solutions?

Find the vertex of the function given below y=x^2-6x+1

The level of co2 emissions, f(x), in metric tons, from the town of fairfax x years after they started recording is shown in the table below. x 2 4 6 8 10 f(x) 26,460 29,172.15 32,162.29 35,458.93 39,093.47 select the true statement.