Can some body help me whit this i need to use the law of cosines and is a SAS case, please

Find the number of liters in 12.8 gal of gasoline. round to the nearest hundredths

What can you determine about the solutions of this system

Ms.ortiz sells tomatoes wholesale. the function p(x)=-80x^2+320x-10, graphed below, indicates how much profit she makes on a load of tomatoes if she makes on a load of tomatoes if she sells them for 4-x dollars per kilogram. what should ms.ortiz charge per kilogram of tomatoes to make on a load of tomatoes?