The temperature has been dropping 2 1/2 degrees every hour and the current temperature is -15°. How many hours ago, was the temperature 0°?

Aladder that is 30 ft long needs to reach 27 ft up a building. what should the angle of the vertical be?

What are the domain and range of f(x)=[1/5]x

Colby and jaquan are growing bacteria in an experiment in a laboratory. colby starts with 50 bacteria in his culture and the number of bacteria doubles every 2 hours. jaquan starts with 80 of a different type of bacteria that doubles every 3 hours. let x equal number of days. colbys experiment follows the model: a.) y=50*2^x b.) y=50*2^8x c.) y=50*2^12x jaquans experiment follows the model: a.)80*2^x b.)80*2^8x c.)80*2^12x