Evaluating Functions

Function Notation

100

Evaluate f(x) = x + 5, when f(10)

x = 15

200

Evaluate f(x) = 3x - 2, when f(5)

x = 13

300

Evaluate f(x) = 2x - 6, when f(-10)

x = -26

400

Evaluate g(x) = x² + 5, when g(2)

x = 9

500

Evaluate g(x) = x² - 10, when g(-5)

x = 15

Function Fun

100

f(x) = x³ + 4 

g(x) = 2x - 12 

h(x) = x² - 2x + 3 

Evaluate f(1)

x = 5

200

f(x) = x³ + 4 

g(x) = 2x - 12 

h(x) = x² - 2x + 3 

Evaluate g(-2)

x = -16

300

f(x) = x³ + 4 

g(x) = 2x - 12 

h(x) = x² - 2x + 3

 Evaluate f(-2)

x = -4

400

f(x) = x³ + 4 

g(x) = 2x - 12 

h(x) = x² - 2x + 3 

Evaluate h(-3)

x = 18

500

f(x) = x³ + 4 

g(x) = 2x - 12 

h(x) = x² - 2x + 3 

Evaluate g(3)

x = -6

Solving Functions

100

f(x) = 2x + 11

Solve when x = 11

x = 11

200

f(x) = -4x - 2 Solve when f(x) = -2

x = 6

300

f(x) = x² + 1 Solve when f(x) = 26

f(26)=677

400

g(x) = x² - 10 Solve when g(x) = -2

g(-2)=-6

500

g(x) = x³+ 5 Solve when g(x) = 6

g(6)= 221

Solving Equations

100

3x+2=11

x=3

200

1/4x=20

x=80

300

1000x+2=1002

x=1

400

2x+40=60

x=10

500

Evaluate the value of a classic car after 10 years. V(t) = 20,000(1.08)^t V(10) =

The value of a classic car appreciates to $43,178.50 after 5 years.

Solving InEqualities

100

3x<27

x<9 to the left

200

6x+1<13

x<2 to the left of 2

300

25x+6>81

x>3

400

If I have a fraction, the inverse is the _______. 

The inverse of division is __________. 

Reciprocal; multiplication

500

3x+7>5x

7/2>x or x<7/2