Let a1, a2, a3,
..., an, ...
be a sequence of positive numbers.
The first four terms of the sequence are given below.
4.07, 10.07, 16.07, 22.07, ...
Select the correct rule for finding the (n+1)th term from the nth term.
an+1 = an + 4.07
an+1 = 6an
an+1 = an + 6
an+1 = 6an + 4.07
an+1 = an - 6
3
Right!
The student got this item correct.
1
Sorry, that was incorrect.
Instead of adding 4.07 to the nth term, you needed to add 6 to it.
To check your answer, apply the rule to two consecutive terms.
The student did not get this item right.
2
Sorry, that was incorrect.
Instead of multiplying the nth term by 6, you needed to add 6 to it.
To check your answer, apply the rule to two consecutive terms.
The student did not get this item right.
4
Sorry, that was incorrect.
You needed to add 6 (the common difference)
to the nth term to get the (n+1)th term.
To check your answer, apply the rule to two consecutive terms.
The student did not get this item right.
5
Sorry, that was incorrect.
You needed to add 6 instead of subtracting 6 from the nth term
because it's an increasing sequence.
To check your answer, apply the rule to two consecutive terms.
The student did not get this item right.
RecursiveRuleArithmetic