Can you please help with this question

Step-by-step explanation:

yes, it is a function, because for every possible value of x there is exactly 1 associated value of y.

the domain (the valid values of x) is

(- infinity, + infinity)

consider the round brackets, they symbolize "excluded", because infinity is not a value.

the range (the valid values of y) is

[1, 4]

consider the brackets here to symbolize "included".

since the graph shows a continuous curve and not just single points, the or integer numbers in your answer are not enough. every value between these integer values is valid too.

the entire expression should be subtracted from 30. to subtract the quantity, distribute the negative sign, which changes the signs on the terms. so, the –2 changes to positive and gets added to 30 instead of subtracted from it.

hope this ! ^w^

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