Ineed to know whether each one of these is a terminating or repeating decimal

If square root x = -7, then x= -49 true or false

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.

How is this equation completed? i cannot find any examples in the book.