Nancy and Kevin collect coins. Nancy has x coins. Kevin has 4 coins fewer than three times the number of coins Nancy has. Write and simplify an expression for the total number of coins Nancy and Kevin have.

You have a square piece of cardboard that measures 14 inches on each side. to build a box, you cut congruent squares out of each corner of the cardboard. use the picture to find the area of the cardboard you were used to build the box