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3 years ago

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Kaylie had $1250 in her savings account. She withdrew $82 each month for 8 months in order to pay for a summer vacation. How muc

h did Kaylie have in her account at the end of the 8 months?

2 answers:

tester [92]3 years ago

8 0

I don't have any paper or a calculator nearby so ill tell you how to do it. the easiest way is to multiply 82 by 8 and subtract that from 1250

Vikentia [17]3 years ago

4 0

She would have 594 dollars left.

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Pleasantburg has a population growth model of P(t)=at2+bt+P0 where P0 is the initial population. Suppose that the future populat

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Answer:

The population will reach 34,200 in February of 2146.

Step-by-step explanation:

Population in t years after 2012 is given by:

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$0.8t^{2} + 6t - 15200 = 0$

Solving a quadratic equation:

Given a second order polynomial expressed by the following equation:

$ax^{2} + bx + c, a\neq0$ .

This polynomial has roots $x_{1}, x_{2}$ such that $ax^{2} + bx + c = a(x - x_{1})*(x - x_{2})$ , given by the following formulas:

$x_{1} = \frac{-b + \sqrt{\bigtriangleup}}{2*a}$

$x_{2} = \frac{-b - \sqrt{\bigtriangleup}}{2*a}$

$\bigtriangleup = b^{2} - 4ac$

In this question:

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So $a = 0.8, b = 6, c = -15200$

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134 years after 2012.

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So the population will reach 34,200 in February of 2146.

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