How do you order decimals from least to greatest

What is the rotational symmetry of a wheel

Achemist has 200 ml of a 10% sucrose solution. she adds x ml of a 40% sucrose solution. the percent concentration, y, of the final mixture is given by the rational function: the chemist needs the concentration of the final mixture to be 30%. how many milliliters of the 40% solution should she add to the 10% solution to get this concentration?

Which expression do you get when you eliminate the negative exponents of 4a^2 b^216a^-3 b