Mod 1.1-1.4 Review

A bacteria colony starts with 5 bacteria and triples every hour. Which of these equations models this situation?

• y = 3(5)^x
• y = 3x + 5
• y = 5x + 3
• y = 5(3)^x

Which of the following is an arithmetic sequence?

• 1, 3, 9, 27...
• 4, 8, 12, 16 ...
• 16, 8, 4, 1 ...
• 4, 8, 16, 32 ...

Which of the following fits with the recursive rule for the dots in the picture?

• f(n) = f(n-1) - 4; f(0) = 1
• f(n) = f(n-1) ^_. 4; f(0) = 1
• f(n) = f(n-1) + 4; f(0) = 1
• f(n) = f(n) + 4

Which of the following is the explicit function for the dot pattern in the picture?

• f(x) = f(x-1) _^. 4 ; f(0) = 1
• f(x) = 4x + 1 ; f(0) = 1
• f(x) = f(x-1) + 4; f(0) = 1
• f(x) = 1(4)^x ; f(0) = 1

What type of sequence fits with given picture?

• geometric
• arithmetic

Find the next two number in the sequence:
13, 8, 3, -2 ...

• -7, -12
• 3, 8
• 2, 7
• 1, 1/2

If the sequence below is an arithmetic sequence, what will the next two numbers be?
5, 10

• 20, 40
• -20, -40
• 15, 20
• 15, 25

If the sequence below is a geometric sequence, what will the next two numbers be?
5, 10

• 15, 20
• 20, 40
• 15, 30
• -20, -40

Find the first 5 terms for the following arithmetic sequence:
_{f(n) = 7^_ 2n}

• 5, 4, 3, 2, 1
• 9, 11, 13, 15, 17
• 5, 3, 1, -1. -3
• 2, 5, 7, 10, 13

Match the correct equation with the given table of values.

• y = x² + 4
• y = x + 4
• y = 4^x
• y = x - 4