Area of a rectangle = length * width
Area = 9 feet * 8 feet
Area = 72 square feet
Answer:
120 pounds
Step-by-step explanation:
Since the new cost is 144 pounds and this is 20% more, this is 120% of the original price. Remember 100+20 = 120. To find the original price set up a proportion with these values:
Solve for the original price by cross multiplying numerator with denominator.
x(120) = 144(100)
120x = 14400
x= 120 pounds
Integers are just whole numbers and their negative counterparts.
The set of integers is shown below.
{... -3, -2, -1, 0, 1, 2, 3, ...}
Decimals are not integers but rational numbers do include them.
So -8.4 is a rational number.
A. 21x+63 Hope this helps!
