Question

Which describes the type of sequence in 99, 89.9, 78.8, 68.7, . . . . . ?

a) neither geometric nor arithmetic
b) geometric
c) arithmetic
d) both arithmetic and geometric

(pLeAsE TelL mE wHY yOu PIcKeD YoUr AnSwER)

Answer 1

Explanation:

The is neither geometric nor arithmetic. The differences have to be the same.

99 - 89.9 = 9.1

89.9 - 78.8 = 11.1

78.8 - 68.7 = 10.1

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