Solve for a: 2 1/7:(15a)=5/14:(0.8)

Plz help me I'm really bad at math and I need this for my RSM.
Oh and Happy Thanksgiving (if you celebrate it)!

A. 127 cm^2 b. 144.5 cm^2 c. 172 cm^2 d. 50 cm^2

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.

What is the measure of ba (the minor arc) in the diagram below?