QUESTION IMAGE
Question
- jada saw a music video that her favorite artist recently posted online. the equation ( v(t) = 320 cdot 4^t ) represents the number of views, ( v ), of the video, ( t ) days since jada saw the video. assume that the equation makes sense for a few days before and after jada saw the video.
a) find ( v(-2) ).
b) what does ( v(-2) ) represent in this situation?
- for the equation ( y = 8 cdot 2^x ), complete the table and plot the ordered pairs on the graph.
(table with x values -3, -2, -1, 0, 1, 2, 3 and empty y column, followed by a graph)
Step1: Substitute $t=-2$ into $v(t)$
$v(-2)=320 \cdot 4^{-2}$
Step2: Rewrite negative exponent as reciprocal
$v(-2)=320 \cdot \frac{1}{4^2}$
Step3: Calculate $4^2$ and simplify
$v(-2)=320 \cdot \frac{1}{16}=20$
Step4: Substitute $x=-3$ into $y=8 \cdot 2^x$
$y=8 \cdot 2^{-3}=8 \cdot \frac{1}{8}=1$
Step5: Substitute $x=-2$ into $y=8 \cdot 2^x$
$y=8 \cdot 2^{-2}=8 \cdot \frac{1}{4}=2$
Step6: Substitute $x=-1$ into $y=8 \cdot 2^x$
$y=8 \cdot 2^{-1}=8 \cdot \frac{1}{2}=4$
Step7: Substitute $x=0$ into $y=8 \cdot 2^x$
$y=8 \cdot 2^{0}=8 \cdot 1=8$
Step8: Substitute $x=1$ into $y=8 \cdot 2^x$
$y=8 \cdot 2^{1}=8 \cdot 2=16$
Step9: Substitute $x=2$ into $y=8 \cdot 2^x$
$y=8 \cdot 2^{2}=8 \cdot 4=32$
Step10: Substitute $x=3$ into $y=8 \cdot 2^x$
$y=8 \cdot 2^{3}=8 \cdot 8=64$
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For 5a):
20
For 5b):
It represents the number of views the video had 2 days before Jada saw it.
For 6) Completed Table:
| $x$ | -3 | -2 | -1 | 0 | 1 | 2 | 3 |
|---|
For 6) Graph Plotting:
Plot the ordered pairs $(-3,1)$, $(-2,2)$, $(-1,4)$, $(0,8)$, $(1,16)$, $(2,32)$, $(3,64)$ on the provided coordinate grid, with each point aligned to the corresponding $x$ and $y$ axis values.