Answer:
After 12.2 miles
Step-by-step explanation:
You can check this by graphing y = 0.85+16.75 and y = 0.40 + 22.25 and looking for the solution (the point where they intersect).
You can also use the elimination or substitution method.
Answer: 2, 1.5 , -0.75
(b) 
Step-by-step explanation:
Given
line is 
Converting it into intercept form
So, the x-intercept is 
and y-intercept is 
The slope is given by
(b) the line perpendicular to the above line and passing through 
The slope of the required line
Equation of the line is given by
The graph would be similar to a Sin or Cos graph with a vertical shift. As the music gets louder the graph will go up and as the music and crowd become quieter, the graph will go down. Going up and down until the end of the concert where it will be 0.
Also side note, are you by chance in Trig 01 Summer course? If so, I am in the same class haha.
