Answer:
The sequence above is a geometric sequence
For an nth in a geometric sequence

where n is the number of terms
a is the first term
r is the common ratio
From the question
a = 45
r = 15 / 45
The explicit formula for the sequence is
U(n) = 45(1/3)^n-1
Hope this helps you

<span>Representing in fraction for the best understanding
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When the exponent is negative, the inversion is made, the numerator becomes the denominator, and the denominator becomes the numerator, and the change of signal from the exponent, which was negative, becomes positive.
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Answer:
c.-1/6
Answer: (7x + 1)(x + 7)
Step-by-step explanation:

Answer:
d
Step-by-step explanation:
y