Step-by-step explanation:

Factors of 64 are 2 * 2 * 2 * 2 * 2 * 2
factors of 120 are 2 * 2 * 2 * 3 * 5
gcf= greater common factor so,
gcf of 64 and 120 is 2.
Answer:
1
Step-by-step explanation:
If there is nothing by the (x) in the equation there is always an invisible 1 next to it. The full equation is f(x)= 1x+3. The answer is 1. Hope that helps!
Third piece = 6 feet />l=large
(3l+3) +(1/3l)+2 +l =15
multiply everything by 3
3l-3 +l+6+3l = 45
7l = 42
l = 6 (3rd piece) All pieces =6 + 5 +4 = 15