In Problems 15-26, approximate each number (a) rounded and (b) truncated to three decimal places.

15. 18.9526

write each statement using symbols

35. The quotient x divided by 2 is 6.

evaluate each expression

10- [6 -2 . 2 + (8 - 3)] . 2

55. 3 %5*10*21

57. 6%25 . 10% 27

use the Distributive Property to remove the parentheses

74. 4x(x + 3)

88. Is subtraction associative? Support your conclusion with an example.

90. . Is division associative? Support your conclusion with an example.

Skill Building

11. On the real number line, label the points with coordinates 0,1,-1,5%2,-2.5, 3%4 and 0.25

, replace the question mark by or whichever is correct.

15. -1? -2

write each statement as an inequality

25. x is less than 2

31. x is greater than -1 .

, simplify each expression.

83. square of (-4)*2

. Express the answer so that all exponents are positive. Whenever an exponent is 0 or negative, we assume that the base is not 0.

87. (x2 y-1 ) 2

use a calculator to evaluate each expression. Round your answer to three decimal places.

(6.1)-3