If f(x)=\sqrt{\frac{1}{2}x-10}+3, which inequality can be used to find the domain of f(x)?

Which of the following answers is 5/25 simplified? 1/5 5/5 2/5 1/25

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

Aswimming pool had 2.5 million liters of water in it. some water evaporated, and then the pool only had 22 million liters of water in it. what percent of the water evaporated?