Area = length X width
A = L(12 ft) x W(9 ft) but since the cost of carpet is given in square yards not square feet we need to convert
A = (12 ft)(1 yd/3 ft) x (9 ft)(1 yd/3 ft) 1 yard = 3 feet so 1 foot = 1/3 yard
A = 4 yd x 3 yd divide by 3 ft which cancels the original ft and leaves yd's
A = 12 square yards
Cost = Area x price per yard
Cost = 12 sq yd X $35.00/ sq yd multiply and the sq yd's cancel leaving just cost in dollars
Cost = $420.00
28 each book 155-15=140 and then 140÷5=28
2 hundred dollar bills is $200. 6 twenty dollar bills is $120. 5 ten dollar bills is $50. 18 one dollar bills is $18. 6 quarters is $1.50. 12 dimes is $1.20. a check for $200 is $200. a check for $11.12 is $11.12. add these up, you get $601.82
the standard form is 3x+y=4
