Final answer:
The expression 32z - 48 is factored by finding the GCF, which is 16, and then expressing the original expression as a product of the GCF and the remaining factors, resulting in 16(2z - 3).
Step-by-step explanation:
To factor the expression using the GCF (Greatest Common Factor), firstly we need to find the highest number that divides both 32z and 48 evenly. In this case, the GCF is 16. So, we can express the given expression as the product of 16 and the remaining factors:
32z - 48 = 16(2z) - 16(3) = 16(2z - 3)
So, the factored expression using the GCF is 16(2z - 3).