3x+2=11 what is the answer

Empty box + box + empty box fill in the box is equal to 30 how

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

At the "no mutants allowed" country farm, every sheep has 4 legs, every chicken has two legs, and all animals have only 1 head. asked to count how many sheep and chicken are in the fields, a farm boy reports back that there are 140 feet and 50 heads. how many sheep and chicken are there? there are sheep and chicken at the farm.