A number is multiplied by 4, then 5 is added. The result is 21. Write an equation to represent this situation.

Well a yard is 3 feet, and you want to find the cost of 27. So first do 27/3 = 9  And that is how many yards you got     >  9  <    Each yard cost $4.63  so you want to multiply it        9  x 4.63  =  41.67 add a $ to the front and you have got your answer. I hope this helped :}