Mr. Rice's students ran a 40-yard dash in the following times, in seconds. 6.8 7.3 7.1 7.0 7.2 7.3 7.0 6.9 6.9 7.1 7.1 7.2 7.1 7.0 7.1 7.2 How many race times are recorded? I need help​

Name the most appropriate metric unit for each measurement like the mass of cow

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

F(x)=x/2-2 and g(x)=2x^2+x-3 find (f+g)(x)