Answer:
a4 = -2
Step-by-step explanation:
a2 = 13 -5 = 8
a3 = 8 -5 = 3
a4 = 3 -5 = -2
Answer:
The expression with grouping symbols is, 
Step-by-step explanation:
Grouping symbols are used to show what should be done first in the math expression.
Parentheses are the most common grouping symbols.
Given the expression: 3a -3
to rewrite this expression with grouping symbols:
Place the parentheses

Therefore, the expression with grouping symbols is, 
Answer:
<u>D.</u><u>A</u><u>l</u><u>l</u><u> </u><u>of </u><u>these </u><u>statements </u><u>are </u><u>true</u>