(3x) + (x+60) = 180
4x + 60 = 180
Subtract 60 from both sides
4x = 120
Divide 4 from both sides
x = 30
Answer:
<em>Answer</em><em> </em><em>is</em><em> </em><em>16x</em><em>^</em><em>4</em>
Step-by-step explanation:

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ANSWER
Linear positive association
EXPLANATION
As the values of x are increasing, the values of y are also increasing.
We can actually find the slope of this curve to be,

We can see that the slope is positive.
This indicates a linear positive association between x and y.
The correct choice is A.