You have to substitute. So like number 1 is 3+5 because the value of t is three. 2. is -2. 3. is -9. 4 is 0. 5 is -12. 6 is 24. 7 is -96. 8 is 64. 9 is 7. 10 is 2.
You mean a square has an AREA of 100 square meters? The length of 1 side equals square root of 100 = 10 meters. Therefore perimeter = 4 * 10 = 40 meters.
