1. A positive real number is 4 less than another. If the sum of the squares of the two numbers is 72, then find the numbers.

Scarlet bought three pairs of sunglasses and two shirts for $81 and paula bought one pair of sunglasses and five shirts for $105 what is the cost of one pair of sunglasses and one shirt?

Complete the solution of the equation. find the value of y when x equals to 6 4x+y=20

Alcoa was $10.02 a share yesterday. today it is at $9.75 a share. if you own 50 shares, did ou have capital gain or loss ? how much of a gain or loss did you have ? express the capital gain/loss as a percent of the original price