On a recent flight, the 120 passengers ordered dinner as depicted in the table. Use this table to answer the following question.
2 answers:
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Since this is a right triangle, we can use our trigonometric functions to solve for x.
Since we know the adjacent side and hypotenuse, we will use cosine.
Based on the function
, we can solve for x. The adjacent side is 7 and the hypotenuse is 12. Plugging this in, we get 
.
Now, we must use our inverse trigonometric functions to solve for x:
The inverse cosine and cosine on the left side cancel, leaving you with:
Since we know the adjacent side and hypotenuse, we will use cosine.
Based on the function
Now, we must use our inverse trigonometric functions to solve for x:
The inverse cosine and cosine on the left side cancel, leaving you with:
When we write a line equation in the form
m is the slope of the line, and q is the y-intercept.
Since we want the y-intercept to be -3, our line will look like
In order to fix the slope, remember that two parallel lines have the same slope. So, the slope of the given line y=2x-5 is 2, and since we want a line parallel to this line, our slope will be 2 as well.
Plugging the values, we can finish the equation: