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Ad libitum [116K]

3 years ago

10

The price of a television decreased from $275 to $190 during a clearance sale. What is the percent of decrease in the price? Rou

nd to the nearest percent, if necessary.
I think it's D.

A. 29% B. 31% C. 45% D. 69%

1 answer:

just olya [345]3 years ago

3 0

195=275-275p -275 -27 -80=-275p You do -80 divided by -175 which is 0.45 and your answer is C45%.

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Answer:

We have function,

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d is vertical shift or midline.

In the equation equation, we must factor out 2 so we get

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Also remeber a and b is always positive

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Amplitude is 6.

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$3 - 6 \sin( \frac{\pi}{2} )$

$3 - 6(1)$

$3 - 6$

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E. To find phase shift, set x-c=0 to solve for phase shift.

$x + \frac{\pi}{4} = 0$

$x = - \frac{\pi}{4}$

Negative means to the left, so the phase shift is pi/4 units to the left.

f. Period is PI, so use interval [0,2pi].

Look at the graph above,

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