Answer:

Step-by-step explanation:
1) Remove parentheses.

2) Regroup terms.

Answer:
False
Step-by-step explanation:
Explanation is given below.
A "roster" here is essentially a version of the set with all of elements listed out. Here, those elements are all of the odd numbers between 20 and 30, so our list would be
{21, 23, 25, 27, 29}
Answer:
54
Step-by-step explanation:
Answer:
Step-by-step explanation:
