19
QuizMultiple Choice

Function Notation — Unit test

Question 19 • CUSD Math 01 A (5.0)

A sequence is defined by the recursive formula f(n + 1) = 1.5f(n). Which sequence could be generated using the formula?

Answer
A
–12, –18, –27, ...
B
–20, 30, –45, ...
C
–18, –16.5, –15, ...
D
–16, –17.5, –19, ...

Explanation

The rule says to multiply each term by 1.5 to get the next term. In choice A, −12 × 1.5 = −18 and −18 × 1.5 = −27, so the sequence follows the rule. The other choices do not have a consistent 1.5 multiplier between consecutive terms.

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