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Consider the sequence of numbers 5, 10, 15, 20, ... The first number of the sequence is 5, The second number of the sequence is 10, The third number of the sequence is 15, etc. What is an expression for the nth number of the sequence?
63
30
n + 4
162
5n
2n
17
45
Rule: First time add 1, so 2 + 1 = 3 Then add 2, so 3 + 2 = 5 Then add 3, so 5 + 3 = 8 Then add 4, so 8 + 4 = 12 What is the next number in the sequence?
63
30
n + 4
162
5n
2n
17
45
What is the next number in the above sequence? 3, 10, 17, 24, 31, 38, ...
63
30
n + 4
162
5n
2n
17
45
Rule: First time add 4, so 2 + 4 = 6 Then add 6, so 6 + 6 = 12 Then add 8, so 12 + 8 = 20. What is the next number in the above sequence?
63
30
n + 4
162
5n
2n
17
45
Rule: 'Double the previous number, then add 1', so 2 × 1 + 1 = 2 + 1 = 3; 2 × 3 + 1 = 6 + 1 = 7; 2 × 7 + 1 = 14 + 1 = 15; 2 × 15 + 1 = 30 + 1 = 31 - What is the next number in the above sequence? 1, 3, 7, 15, 31, ...
63
30
n + 4
162
5n
2n
17
45
What is the next number in the above sequence? 2, 6, 18, 54, ...
63
30
n + 4
162
5n
2n
17
45
Consider the sequence of numbers 5, 6, 7, 8, ... The first number of the sequence is 5. The second number of the sequence is 6. The third number of the sequence is 7, etc. What is an expression for the nth number of the sequence?
63
30
n + 4
162
5n
2n
17
45
Consider the sequence of numbers 2, 4, 6, 8, ... The first number of the sequence is 2 The second number of the sequence is 4 The third number of the sequence is 6 etc What is an expression for the nth number of the sequence?
63
30
n + 4
162
5n
2n
17
45
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