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If the lengths of adjacent sides of a rectangular playground have measures of 4x - 3 and 2x² + 7 units, respectively, then which of the following expressions represents the area, in square units, of the playground?

(A)2x² + 4x + 4

(B) 4x² + 8x + 8

(C) 8x³ - 21

(D) 8x³ - 6x² + 28x - 21

(E) 8x³ + 6x² + 28x + 21

All of the following statements about rational and/or irrational numbers must be true EXCEPT:

(F) the sum of any two rational numbers is rational. (G) the product of any two rational numbers is rational. (H) the sum of any two irrational numbers is irrational. (J) the product of a rational and an irrational number may be rational or irrational. (K) the product of any two irrational numbers is irrational.

Correct Answer: K

If a(x) = b(x) + c(x), where b(x) = 3x² - 8x + 113 and c(x) = - 3x² + 18x + 7 and x is an integer, then a(x) is always divisible by which of the following?

(A) 6 (B) 7 (C) 10 (D) 12 (E) 15

Correct Answer: C

To this questions below, use the following graph, which provides information about the number of new clients five salespeople registered last month.

What percentage of the new clients did Yolanda register?

(F) 18%(G) 20%(H) 22%(J) 24%(K) 25%

Correct Answer: G