EL 8 Practice

Level 1: What is the next number in the sequence of numbers 3, 9, 15, 21, _____

• 26

• 27

• 28

• 29

Level 1: There are two missing values in the sequence of numbers. Find the two missing values. What is there sum? 120, 60, _____, 15, ______

• 30

• 3.5

• 37.5

• 42.5

• 36.5

Level 1: If y = 5^x+2x and x = 3, what is the value of y?

• 131

• 21

• 28

• 121

• 41

Level 2: Is the mapping shown in the picture a function?

• yes

• no

• maybe

Level 2: Which of the following values are in the domain of the relation shown?

• 1

• 4

• 2

• 5

• -5

Level 2: What is true about the relation shown in the mapping?

• The relation is a function

• The domain has more elements than the range

• The sum of the range values is 15

• When the relation is plotted on a graph, the relation is linear

Level 2: How many of the following relations shown in the graphs are functions?

• 0

• 1

• 2

• 3

• 4

Level 2: Which of the following are quadratic functions?

• f(x) = 7x - 1

• f(x) = 7x²-1

• f(x) = 7^x-1

• 
• 

Level 2: The area A(x) of a rectangle is found using the formula L*W. Which of the following functions correctly describes A(x)?

• A(x) = 3x + 5, A(x) is linear

• A(x) = 6x + 6, A(x) is linear

• A(x) = 6x + 6, A(x) is quadratic

• A(x) = 3x + 5, A(x) is exponential

• A(x) = 6x + 3, A(x) is quadratic

Level 3: F(x) = 9x - 2. Which of the following is true about F(x)?

• F(x) is quadratic

• F(x) is exponential

• F(-3) = 25

• F(-2) = -20

• F(x) is function