3x : 2 = 15
3x = 15 * 2
3x = 30
x = 30 : 3
x = 10
--------------------------------
3(10) :2 = 15
The sequence is not geometric because there is no common difference or common ratio between each term. it’s also not an Arithmetic Sequence
Slope is 2
Y intercept is 4
In this problem the big angle will be equal to two times the smaller angle so the correct expression is:

Now we can rewrite the equation so: