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Determine whether each sequence is arithmetic or geometric. Find the next three terms.
14, 19, 24, 29, . . .
a.geometric, 34, 39, 44
b.arithmetic, 32, 36, 41
c.arithmetic, 34, 39, 44
d.The sequence is neither geometric nor arithmetic.
I think this is
c.? What are the first four terms of an arithmetic sequence if the common difference is 1.5 and the first term is 15?

a.15, 30, 45, 60
b.15, 16.5, 18, 19.5
c.15, 22.5, 33.75, 50.625
d.none of the above This is
b.?

Respuesta :

Jabbypappy
You don't know your terms I suppose.

Arithmetic: goes from one term to the next by adding or subtracting the same amount
Ex. 3,12,21,30,39 (d=9)
(d means difference, use this for arithmetic sequences)

Geometric: goes from one term to the next by multiplying or dividing by the same amount
Ex. 1,2,4,8,16,32,64,128 (r=2) (r means ratio, its just the number multiplied or divided each time)

Answer is c

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