10 1/2 ft=2x-18 in
convert ft to in--10 1/2ft=126 in
126=2x-18
2x=144
x=<em>72 inches or 6 feet</em>
Counterexample:
4 is not a prime number. So, it's false.
The best and most reasonable answer would be C!
Please give me the brainliest answer :)