For this case we have to define trigonometric relations of rectangular triangles that:
- The cosine of an angle is given by the leg adjacent to the angle on the hypotenuse of the triangle.
- The sine of an angle is given by the leg opposite the angle on the hypotenuse of the triangle.
Then, according to the figure we have:

Answer:

Option D
We know from the slope intercept form that y=mx+b so the y intercept is 12 while every hour the cost goes up by 8
You subtract 38.75 from 46.5, which is 7.75. 7.75/46.5=about .16666, or 16.7 percent.
Answer:
35.235
Step-by-step explanation:
because 78.3*0.45 = 35.235