Review the following concepts if needed:
Introduction to Functions Practice Test
Problems

Evaluate f ( x ) = 4 − 2 x ^{2} at x = 3.
(a) −14
(b) −12
(c) −10
(d) −8

Evaluate f (−1) for
(a) −1
(b) 5
(c) 2
(d) 2,5

Evaluate f ( u ^{2} + v ) for f ( x ) = 4 x + 6.
(a) ( u ^{2} + v )(4 x + 6)
(b) 4 u ^{2} + v + 6
(c) 4 v ^{2} x + 6
(d) 4 u ^{2} + 4 v + 6

What is the domain for
(a) (−∞,∞)
(b) (−∞, −1] ∪ [1, ∞)
(c) (−∞, −1) ∪ (1, ∞)
(d) [−1,1]

Evaluate for f(x) = x ^{2} + 3.
(a) 2 a + h ^{2}
(b) 2 a + h ^{2} + 3
(c) 2 a + h
(d) 2 a + h + 3

What is the domain for
(a) (−∞, 5) ∪ (5, ∞)
(b) [5, ∞)
(c) (−∞, 5]
(d) (−∞, −5) ∪ (5, ∞)

What is the domain for
(a) (−∞, 9) ∪ (9, ∞)
(b) (−∞, 3) ∪ (3, ∞)
(c) [3, ∞)
(d) (−∞, −3)∪(−3, 3) ∪ (3, ∞).

What is the domain for the function {( a , 6), ( b , 6), ( d , 9)}
(a) { a, b, d }
(b) {6, 9}
(c) { a, b, d , 6, 9}
(d) { a, b, d , 9}

What is the domain for
(a) [4, 5) ∪ (5, ∞)
(b) (−∞, 4) ∪ (4, ∞)
(c) [4, ∞)
(d) (4, ∞)

What is the domain for
(a) [4, 5) ∪ (5, ∞)
(b) (−∞, 4) ∪ (4, ∞)
(c) [4, ∞)
(d) (4, ∞)
Solutions
 A
 B
 D
 A
 C
 B
 D
 A
 D
 A
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