A bird drops a stick to the ground from a height of 80 feet. The equation 0=−16x^2+64x+80 gives the number of seconds that have passed when it hits the ground. After about how many seconds did the stick hit the ground? I need an answer pretty quickly, and I can't figure out the answer. The answer should look like this, x= so and so

Thanks

Do some research and find a city that has experienced population growth. determine its population on january 1st of a certain year. write an exponential function to represent the city’s population, y, based on the number of years that pass, x after a period of exponential growth. describe the variables and numbers that you used in your equation.

Aplane intersects a pris paralel to the base of the prism. the cross section is a polygon wth eight sides. how many sides does the base of the prism have? a. 10 b. 8 c. 7 d. 9

Aladder that is 20ft long is leaning against the side of a building. if the angle formed between the ladder and the ground is 75 degrees how far is the bottom of the from the base of the building?