If g(x) is a reflection of f(x) over the x axis, then g(x) = -1*f(x), which can be shortened to g(x) = -f(x). We stick a negative outside the entire f(x) function to flip the signs of each y coordinate. For example, if the point (1,2) was on f(x), then (1,-2) is on g(x).
So f(x) = 5(0.8)^x turns into g(x) = -5(0.8)^x
Answer: Choice B
Step-by-step explanation:
The answer to this is A.
Answer:
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Step-by-step explanation:
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Answer:
an = 17 +5(n -1)
Step-by-step explanation:
The first term can be found by working backward from the third term:
third term = 27
second term = 22 . . . . subtract 5 from 3rd term
first term = 17 . . . . . . . . subtract 5 from 2nd term
The generic term is given by the formula ...
an = a1 + d(n -1) . . . . . a1 = first term; d = common difference
Here, we have a first term of 17 and a common difference of 5. So, the sequence terms are described by ...
an = 17 +5(n -1)
Combine like terms:
3/4-1/2=1/4
-4z+5/4z+1/2z=-2 1/4z
so your answer is -2 1/4z+1/4