Which function is not linear?
a) f(x)=6+x
b) f(x)=6-x
c) f(x)=6.x
d) f(x)=6/x

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

The figures below are made out of circles, semicircles, quarter circles, and a square. find the area and the perimeter of each figure and give your answers as a completely simplified exact value in terms of π (no approximations).

Mr. vector door is buying two new cowboy hats all together the hats cost $75.12 the second heart cost twice as much as the first hat what is the price of the more expensive at round to the nearest hundredth