A pyrotechnician plans for two fireworks to explode together at the same height in the air. Firework A travels at 320 ft/s and Firework B travels at 180 ft/s. Firework B is launched 0.25 seconds before firework A. How many seconds after firework B launches will both fireworks explode?

Phyllis and chen are saving money to go to a football game. each friend starts with some money and saves a specific amount each week. phyllis made a graph to show the total she has saved at the end of each week. chen wrote an equation to show the total, y, he has saved at the end of each week, x. y = 15x + 15 compare the amount that each friend has when both friends start saving. select the correct answer from the drop-down menu to complete the statement. phyllis starts with $ and chen starts with $

What values of x satisfy the inequality x^2-9x< 0? how is your answer shown on the graph?

Graph y ≥ -x^2 - 1. click on the graph until the correct graph appears.