Answer:
x=3+2s
Step-by-step explanation:
If Carly's age be considered as x and Carly's sister age be considered as s then
The expression is as follows
x=3+2s
Answer:
Answer 3, 
Step-by-step explanation:
If every element of the sum is multiplied by 8, we can just pull the 8 in front of the sum symbol.
Answer:
-12.6
Step-by-step explanation:
its decreasing that eliminates 3 and 4
and the decrease is bigger than 1.6 so that eliminates 2
making the obvious answer number 1
He buyed 240 cards because
20
x
12
-----
40
+
20
-------
240