Use an inverse function to write θ as a function of x.

C

Step-by-step explanation:

Using the tangent ratio in the right triangle

tanθ = = , then

θ = arctan → C

twenty-six miles over two gallons because the proportion for the original 13 miles to one gallon would be written 13/1 and, doing the same thing to the top and bottom, i multiplied by 2 and got 26/2