Circles of diameter 1 inch and 3 inches have the same center. The smaller circle is painted yellow, and the portion outside the smaller circle and inside the larger circle is
painted green. What is the ratio of the green-painted area to the yellow-painted area?

Find the cosine function that is represented in the graph.

How many solutions does the nonlinear system of equations graphed below have?

If the car had not hit the fence, how much farther would it have skidded? solve the skid-distance formula to find the extra distance that the car would have traveled if it had not hit the fence. round your answer to two decimal places. note that unit conversion is built into the skid distance formula, so no unit conversions are needed.