August 12-13 Practice

Several different functions map the integers to the integers — that is, both the domain and range are integers. We say a function maps onto a set A if every element in A is mapped to from an element in the domain. Which of the following functions maps the integers onto the integers?

• Function g maps every integer x to x + 5.

• Function h maps every integer x to 4x - 1.

• Function j maps every integer x to (x + x).

1. 1.Let f(x) = 11x - 32 and g(x) = 5 - x². Calculate the following:

f(8) = ___

• 56

• 44

• 32

• 88

Tags

CCSS.HSF.IF.A.2

2.Let f(x) = 11x - 32 and g(x) = 5 - x². Calculate the following:

f(-1) = ___

• -43

• -21

• 43

• -11

Tags

CCSS.HSF.IF.A.2

• 79

• 65

• 92

• 54

Tags

CCSS.HSF.IF.A.2

• 111

• 99

• 120

• 85

Tags

CCSS.HSF.IF.A.2

5. 5. Let f(x) = 11x - 32 and g(x) = 5 - x² . Calculate the following:

g(8) = ___

• g(8) = -59

• g(8) = 59

• g(8) = -64

• g(8) = 69

Tags

CCSS.HSF.IF.A.2

6. 6. Let f(x) = 11x - 32 and g(x) = 5 - x². Calculate the following:

7. g(-1) = ___

• 4

• 6

• -4

• 0

Tags

CCSS.HSF.IF.A.2

7. 7. Let f(x) = 11x - 32 and g(x) = 5 - x^2. Calculate the following:

g(4) + g(9) = ___

• -87

• -75

• -65

• -97

Tags

CCSS.HSF-BF.A.1C

8. 8. Let f(x) = 11x - 32 and g(x) = 5 - x^2. Calculate the following:

g(4 + 9) = ___

• g(13) = -164

• g(13) = 174

• g(13) = -144

• g(13) = 169

Tags

CCSS.HSF-BF.A.1C

• 2

• -4

• 8

• 10

Tags

CCSS.HSF.IF.A.2