Item: tExplicitGeometric2b
Stem:
The first four terms of a geometric sequence are given below.
Choose the algebraic expression that represents the nth term in this sequence.
27, 81, 243, 729, . . .
Options:
Key:
- Observable: 3.
Score: 1;
Evidence Value: 1.
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Student:Right!
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Teacher:The student got this item correct.
- Observable: .
Score: 0;
Evidence Value: 0.
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Student:Sorry, that was incorrect.
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Teacher:The student did not get this item right.
Metadata:
Item Node: tExplicitGeometric2b,
Difficulty: 2.
Proficiencies: ExplicitGeometric.