The mass of Earth is approximately 6 * 10^24 kg, and the mass of Mars is about 6.4 * 10^23 kg . How many more kilograms is the mass of Earth than Mars?
Write your answer in a complete sentence using scientific notation

Suppose that the price p, in dollars, and the number of sales, x, of a certain item follow the equation 4 p plus 4 x plus 2 pxequals56. suppose also that p and x are both functions of time, measured in days. find the rate at which x is changing when xequals2, pequals6, and startfraction dp over dt endfraction equals1.5.