Answer:
A=

Step-by-step explanation:

Factorise

Rewrite it


Answer:
Step-by-step explanation:
Amplitude is twice the coefficent of the sine function. In this case, 
Period is
divided by the coefficent of x, in this case, 
Phase shift, is how much you sum or subctract from x inside the sine, in this case
.
Midline you get by hiding the sine and reading what's left, in this case, -4.
Answer:
Step-by-step explanation:
Let the exterior angle = x
Interior angle = 5x
x + 5x = 180 { interior angle and exterior angle are linear pair}
6x = 180
x = 180/6
x = 30
Interior angle = 5*30 = 150