Which phrase represents the expression, 7x + 2?

The measures of the legs of a right triangle are 15m and 20m . what is the length of the hypotenuse

As a self-employed seamstress, you know that it takes 7 yards of material to make 3 jackets. you bought 15 yards of material to make 7 jackets. did you buy enough material? if not, how much were you over or under?

A5 foot long board is propped against the wall of a house. the board forms a 60° angle with the ground. how far is the base of the board from the wall?