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Studentka2010 [4]

2 years ago

4

Brian decided to start a dog-walking service. He's going to charge each dog owner $4.50 to walk one dog and $6.75 to walk two do

gs. Approximately how much will he earn if he walks 13 single dogs and 9 sets of two dogs?
$55.00
$75.00
$100.00
$128.00
Some help? I think its around 75.00 but I'm no good at math.

2 answers:

Bingel [31]2 years ago

5 0

$multiply\ 13\ by\ charge\ for\ one\ dog\ and\ 9\ by\ charge\ by\ two\ dogs\\\\13*4.50\$+9*6.75\$=\\\\58.5+60.75=119.25\$\\\\
He\ will\ earn\ about\ 120\$.$

nataly862011 [7]2 years ago

5 0

Answer: He will earn about $120 if he walks 13 single dogs and 9 sets of two dogs .

Step-by-step explanation:

Given : Brian's going to charge each dog owner $4.50 to walk one dog and $6.75 to walk two dogs.

If he walks 13 single dogs , then amount earned = 13 × $4.50

= $58.5 (1)

If he walks 9 sets of two dogs, then amount earned = 9 × $6.75

=$60.75 (2)

Add (1) and (2)

The total amount he earned = $58.5 + $60.75

= $119.25 ≈ $120

Hence, he will earn about $120 if he walks 13 single dogs and 9 sets of two dogs .

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We have been given an equation $ae^{ct}=d$ . We are asked to solve the equation for t.

First of all, we will divide both sides of equation by a.

$\frac{ae^{ct}}{a}=\frac{d}{a}$

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Now we will take natural log on both sides.

$\text{ln}(e^{ct})=\text{ln}(\frac{d}{a})$

Using natural log property $\text{ln}(a^b)=b\cdot \text{ln}(a)$ , we will get:

$ct\cdot \text{ln}(e)=\text{ln}(\frac{d}{a})$

We know that $\text{ln}(e)=1$ , so we will get:

$ct\cdot 1=\text{ln}(\frac{d}{a})$

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Now we will divide both sides by c as:

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2 years ago

Margo deposited $100 into a savings account earning 4.5% simple annual interest. At the end of each year, she adds $100 to her a

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Answer:

principal interest total money in account

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Step-by-step explanation:

Simple interest for any principal is given by

I = p* r* t/100

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p is the amount deposited

r is the rate of interest

t is the time period of saving

_______________________________________________

For year one

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_______________________________________________

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_______________________________________________

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There fore total money in Margo account is

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principal interest total money in account

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