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3 years ago

13

the member of the booster club decided to sell flowers they planned to charge 7 for a flower but they reduced the price by 2 the

sold 140 at the reduced price

2 answers:

11Alexandr11 [23.1K]3 years ago

7 0

B because it needs to be 140 multiplied by 5 or 7-2.

Grace [21]3 years ago

6 0

Answer:

B

Step-by-step explanation:

140*(7-2) shows $7 - $2 is $5

then, 140 flowers*$5 = $700

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Step-by-step explanation:

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Answer:

$y=2x-8$

Step-by-step explanation:

The given parametric equation is;

$x=6+ln(t),y=t^2+3$

<h3><u>BY ELIMINATING THE PARAMETER</u></h3>

To eliminate the parameter we make $t$ the subject in one equation and put it inside the other.

We make $t$ the subject in $x=6+ln(t)$ because it is easier.

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$y=(e^{x-6})^2+3$ .

$\Rightarrow y=e^{2(x-6)}+3$ .

We have now eliminated the parameter.

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$y-y_1=m(x-x_1)$

where the gradient function is given by;

$\frac{dy}{dx}=2e^{2(x-6)}$

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$\Rightarrow m=2e^{2(6-6)}$

$\Rightarrow m=2e^0$

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$x=6+ln(t),y=t^2+3$

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$1=t^2$

$t=\pm1$

But the slope is the same when we plug in any of these values for t.

$\frac{dy}{dx}=2(\pm1)^2=2$

The equation of the tangent becomes

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$y=2x-12+4$

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