Answer:A combination of variables, numbers, and at least one operation.
Example: x+4
Step-by-step explanation:
Answer:
1) D. (2, -6)
2) B. (3, 1)
Step-by-step explanation:
idk how to explain just trust me
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Answer:
i think its the last one
Step-by-step explanation:
as 15 - 3 is 12 and then the 7
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Answer:
f(3) = 23
Step-by-step explanation: