<em><u>Note: The complete question, along with the graph, is attached below.</u></em>
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Answer:
The value of a = 3
Step-by-step explanation:
Given the function

From the attached graph, it is clear that
at x = 0,

∵ 

Thus
When x = 0, the y-intercept will be:

From the attached figure, it is clear that
at x = 0, the value of y = 3
so
putting y = 3 in the equation

3 = a ∵ 
Therefore, the value of a = 3
Answer:
P = 5.5x + 9
Step-by-step explanation:
P = 5x + (0.3x + 24) + (0.2x - 15)
reduced
P = 5.5x + 9
Answer: x=17 (if that’s what you mean)
explanation: a straight line is 180 degrees, so we can minus 180-115 which will give you 65, and if you set the equation given equal to 65, you’ll get 17