Question

Which of the following statements correctly determines the rule for generating the next term in the sequence 23, 19.5, 16, 12.5, . . .? (1 point)
Responses

Multiply by the common ratio of −3.5
.
Multiply by the common ratio of negative 3.5 .

Add the common ratio of −3.5
.
Add the common ratio of negative 3.5 .

Add the common difference of −3.5
.
Add the common difference of negative 3.5 .

Multiply by the common difference of −3.5
.

Answer 1

Add the common difference of −3.5.

Each term decreases by 3.5: 19.5 − 23 = −3.5, 16 − 19.5 = −3.5, 12.5 − 16 = −3.5. So add −3.5 (or subtract 3.5) each time; the next term is 12.5 − 3.5 = 9.