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softballlover487
24.11.2020 •
Mathematics
A TV that usually sells for $174.90 is on sale for 25% off. If sales tax on the TV is 6%, what is the price of the TV, including tax?
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Ответ:
$131.18 + 6% ($7.87) = $139.051 ≈$139.05
Ответ:
Part A: Geometric Sequence
Part B:![a_1 = 4, a_n = 2a_{n-1}](/tpl/images/0708/0598/1d568.png)
Part C: a₈ = 512
Step-by-step explanation:
When we find the common ratio between the y-values (x-values are n inputs), we should see that we get r = 2. That means we have a geometric sequence.
Because we have a geometric sequence, our recursive formula is:
. Simply plug in our known variables:
Now we need to find what y is when x = 8, so (I used explicit formula):
a₈ = 512