1. pressure p (in pounds per square foot) on a diver at a depth of d feet. solve for d: p=64d+2112 2. the selling price of a pair of pants is $34. if the store paid $8 less for the pants, find the price the store paid. 3. the sum of three numbers is 123. the second number is 9 less than two times the first number. the third number is 6 more than three times the first number. find the three numbers.