Algebra 1 Preassessment

Is the sequence arithmetic: 37, 31, 25, 19, ...

• Yes
• No

Find the common difference: -34, -29, -24, -19, ...

• d = -5
• d = 5
• d = -6
• d = 6

Given the sequence:
 25, 21, 17, 13,...
Write the explicit equation that models the sequence.  (Hint:  Simplify your equation.)

• a_n = 4n + 29
• a_n = -4n + 25
• a_n = -4n + 29
• a_n = 4n + 25

Find the 22nd term of the following sequence:
5, 8, 11, ...

• 14
• 68
• 63
• 71

Find the common ratio for the geometric sequence.

• 10
• 1/2
• 2
• 4

Write the explicit formula for the geometric sequence.

• a_n = 4(3)^n-1
• a_n = 3(4)^n-1
• a_n = -4(3)^n-1
• a_n = 3(-4)^n-1

Find the first four terms of the sequence given the rule:
a_n = 4(5)^n-1

• 20, 100, 500, 2500
• 5, 20, 80, 320
• 4, 20, 100, 500
• 4, 9, 14, 19

How many total did not attend the school play?

• 63

• 15

• 78

• 221

What number should go in the blue box?

• 21

• 135

• 19

• 22

What percentage of girls have blonde hair?

• 30%
• 32%
• 29%
• 40%