Please help I stay up late doing work and find this app some people answer some lie some ask questions on my question and I tired of it if you wanna help me help me please do and give me the right answer 2 questions please

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

Nine more than four times a number is the same as one less than twice the number. find the number?

What is the rate of change of a line that passes through (2,-5) and (6,-2)?