Hello There =)
Commutative property is used. The commutative property <span>states that two numbers can be multiplied in either order.</span>
Answer:

Step-by-step explanation:

Answer:
12.3 mph
Step-by-step explanation:
17.9 - 5.6 = 12.3
Answer:
x= 3 +
, 3 -
Step-by-step explanation:
You use the quadratic formula to get x= 
Then you simplify and get the answers x= 3 +
, 3 -
60c+80=287
Let c stand for the cost of one square foot. with 60 square feet you get 60c. then add 80 for the installation fee.