Sarah weighs 30 more than 2 times as sheila. their total weighs is 150 kilograms. what is the weigh of each in grams?

F(x)=x/2-2 and g(x)=2x^2+x-3 find (f+g)(x)

Astore has clearance items that have been marked down by 60%. they are having a sale, advertising an additional 55% off clearance items. what percent of the original price do you end up paying?

The ph level of a blueberry is 3.1 what is the hydrogen-ion concentration [h+] for the blueberry