I need help on this question ASAP please

Use the elimination method to solve the systems of equations.choose the correct ordered pair. 7x+4y=39

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.

15 liters is approximately how many gallons