n - 7 = 21, n= 28 should be right bc the difference of 28 and 7 is 21
Yes, 16.3 is y maybe but or else I need to use a protractor I believe
Answer:

Step-by-step explanation:

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The first question 10 and the next one is 40 the next one is 30
Answer: Constant
No matter what the input x is, the output f(x) is going to be -4. Therefore, the output is constant.
Note: f(x) can be interchanged with y. So we can say y = -4.