Review Test 3 CH 16

• z ≤ 0 or z ≥ 1
• 0 ≤ z ≤ 1

• a > 1.5c
• c > –1
• a ≤ 0
• a > –1.5c

• d = 72
• d = 721
• d = –31
• d = 0

Find the integral solution of: 5y – 1 < (y + 1)² < (7y – 3)

• 2
• 2 < y < 4
• 1 < y < 4
• 3

• As ‘a’ decreases, ‘y’ decreases
• As ‘a’ increases, ‘y’ decreases
• As ‘x’ increases, ‘y’ increases
• As ‘x’ increases, ‘y’ remains unchanged

If f and g are real functions defined by f(a) = a + 2 and g(a) = 2a² + 5, then fog is equal to

• 2a² + 7

• 2a² + 5

• 2 (a + 2)² + 5

• 2a + 5

If ‘p’ and ‘q’ are the roots of the equation x² – 10x + 16 = 0, the value of (1 – p) (1 – q) is

• –7
• 7
• 16
• –16

• 8
• 16
• 24
• 4

Let p, q and r be distinct positive integers satisfying p < q < r and p + q + r = k. What is the smallest value of k that does not determine p, q, r uniquely?

• 9
• 6
• 7
• 8

Given odd positive integers p, q and r which of the following is not necessarily true?

• p² q² r² is odd

• 3(p² + q³ )r² is even

• 5p + q + r⁴ is odd

• r² (p⁴ + q⁴ )/2 is even