1.2, 3, 7.5, 18.75, ... Which formula can be used to describe the sequence? a.F(x) = 1.2(2.5)^x – 1 b.F(x) = 2.5(1.2)^x – 1 c.F(
x) = 1.2(2.5)^x d.F(x) = 1.2(2.5)^x
2 answers:
Answer:
a. F(x) = 1.2(2.5)^(x – 1)
Step-by-step explanation:
The sequence is geometric with first term 1.2 and common ratio 3/1.2 = 2.5. The explicit formula for such a sequence is ...
a[n] = a[1]·r^(n-1)
For a[1] = 1.2 and r = 2.5, and using x as the term number, the formula is ...
F(x) = 1.2·2.5^(x-1) . . . . . matches selection A
Answer:
Answer: "f(x) = 1.2(2.5)x-1"
Step-by-step explanation:
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