The amount of gasoline at a gas station changes from 58,432.4 gal to 56,475.2 gal from 2:00 pm to 4:00 pm. What rational number represents the average change in amount of gasoline per hour?

If f(x)=2x-6 and g(x)=3x+9, find (f-g)(x)

Aquantity with an initial value of 3900 decays exponentially at a rate of 35% every hour. what is the value of the quantity after 0.5 days, to the nearest hundredth?

The magnitude, m, of an earthquake is defined to be m=log l/s, where i is the intensity of the earthquake (measured by the amplitude of the seismograph wave) and s is the intensity of a “standard” earthquake, which is barely detectable. what is the magnitude of an earthquake that is 1,000 times more intense than a standard earthquake? use a calculator. round your answer to the nearest tenth.