Evaluate -13.4 + -30.5

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

Asunflower was 20 1/2 inches tall. over the next 6 months, it grew to a height of 37 inches tall. what was the average yearly growth rate of the height of the plzzz write a proportion i will give you 100 points

Iknow its nothing to do with education, but what type of thing should i wrote here? ? : ) its for mcdonald's btw.