9.8 100EXAMPLES 4-6 REFER TO PQR.100 DENOTES 10, THE POSITIVE SQUAR...
1. 9.8 100Examples 4-6 refer to PQR.100 denotes 10, the positive square root of 100. (For any posi-tive number x, x denotes the positive number whose square is x.)QSince 10 is greater than 9.8, the best answer is (B). It is importantnot to confuse this question with a comparison of 9.8 and x wherex x
2
= 100. The latter comparison would yield (D) as the correcty answer because x2
= 100 implies that either x = 10 or x = 10,and there would be no way to determine which value x wouldw z actually have.NPR