When you add two numbers the sum is 15 and the difference is one

The heaviest 16% of all men in weight weigh more than how many pounds ?

Jacob signs up to work for 2 1/2 hours at the school carnival. if each work shift is 3/4 hour, how many shifts will jacob work? (i just want to double check : |, for anybody that responds! : )

Find the solution set of this inequality. enter your answer in interval notation using grouping symbols. |8x-4| ≤ 12