Answer:
, 
Step-by-step explanation:
Give.
----------(1)
------------(2)
Solve this linear equation by elimination method.
Add equation 1 and 2


-----------------------------



Put y value in equation 2




, 
The above data represents function because all the input values have unique output values.No input values have multiple output values.
Answer:
Please see attachment
Step-by-step explanation:
Please see attachment
Answer:
75%
Step-by-step explanation:
66 divided by 88 equals .75=75%
Add 121 to 245 to get your answer.
the unit rate is 121, so you add 121 everytime