Mathematics
Grade 9
15 min
Write variable expressions for geometric sequences
Write variable expressions for geometric sequences
Tutorial Preview
1
Find the rule for the sequence: 2, 6, 18, 54...
2
Find the rule for the sequence: 100, 50, 25, 12.5...
3
Find the rule for the sequence: 5, -10, 20, -40...
Sample Practice Questions
Easy
Write an expression for the sequence: 3, 6, 12, 24...
0.3(2)^(n-1)
1.2(3)^(n-1)
2.3(2)^n
3.3(n)^2
Easy
Write an expression for the sequence: 1, 4, 16, 64...
0.4(1)^(n-1)
1.1(4)^(n-1)
2.1(n)^4
3.4(n-1)
Easy
Write an expression for the sequence: 50, 25, 12.5...
0.50(2)^(n-1)
1.25(2)^(n-1)
2.50(0.5)^n
3.50(0.5)^(n-1)
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