I think it’s D
My explanation is:
That I just think it’s correct but that doesn’t mean u have to put my answer tho just saying
Answer:
3. increasing
4. decreasing
Step-by-step explanation:
well for graph 3 the values are increasing
and for graph 4 the values are decreasing
Answer:
I think it should be 1 < x ≤ 6
Step-by-step explanation:
Answer:
Graph attached.
Step-by-step explanation:
In the question the given parameters are as followed.

1). Amplitude a = 7
2). Period = 
3). Vertical shift = 1 means mid line of the graph will be y =1 and maximum of the graph is 8 and minimum is -6.