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Trava [24]
4 years ago
13

Jimmy is selling used books at a yard sale. A customer buys 9 books at a cost of $0.75 each and pays with a $20.00 bill. Jimmy m

ust determine c, the amount of change in dollars he should give the customer. Which equation represents c?
20-0.75C=9
20-0.75-9c
0.75(9)+c+20
0.75+9+20
Mathematics
2 answers:
larisa86 [58]4 years ago
8 0
To find your change, first you must determine how much the customer is paying. To find this, you must multiply the cost of one book by the number of books bought.
$0.75 • 9 = $6.75
To find the change, you must subtract $6.75 from $20. $13.25 is your change.
An example of an equation used to solve this would be
0.75(9) + c = $20
ch4aika [34]4 years ago
8 0

Answer:

it is C

Step-by-step explanation:

on edge

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Let x represent the number of months that Frank makes use of the gym at LA fitness in order to get better in shape.

Let y represent the total cost of using the gym for x months.

He has to pay a one-time enrollment fee of $50 and then membership costs $25 per month. This means that the total cist for x month would be

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4 years ago
Alexandra invested $20,000 in an account paying an interest rate of 6.2%
bazaltina [42]

Answer:

5.1

Step-by-step explanation:

Compounded Annually:

A=P(1+r)^t

A=P(1+r)  

t

 

A=27200\hspace{35px}P=20000\hspace{35px}r=0.062

A=27200P=20000r=0.062

Given values

27200=

27200=

\,\,20000(1+0.062)^{t}

20000(1+0.062)  

t

 

Plug in values

27200=

27200=

\,\,20000(1.062)^{t}

20000(1.062)  

t

 

Add

\frac{27200}{20000}=

20000

27200

​  

=

\,\,\frac{20000(1.062)^{t}}{20000}

20000

20000(1.062)  

t

 

​  

 

Divide by 20000

1.36=

1.36=

\,\,1.062^t

1.062  

t

 

\log\left(1.36\right)=

log(1.36)=

\,\,\log\left(1.062^t\right)

log(1.062  

t

)

Take the log of both sides

\log\left(1.36\right)=

log(1.36)=

\,\,t\log\left(1.062\right)

tlog(1.062)

Bring exponent to the front

\frac{\log\left(1.36\right)}{\log\left(1.062\right)}=

log(1.062)

log(1.36)

​  

=

\,\,\frac{t\log\left(1.062\right)}{\log\left(1.062\right)}

log(1.062)

tlog(1.062)

​  

 

Divide both sides by log(1.062)

5.1116317=

5.1116317=

\,\,t

t

Use calculator

t\approx

t≈

\,\,5.1

5.1

5 0
3 years ago
Which of the following can be a solution to the inequality below?<br> 2x &gt; 6.<br> Pls send help
Citrus2011 [14]

Answer:

x>3

Step-by-step explanation:

you divide both sides by 2 then you get three. The sign remains the same.

3 0
3 years ago
A home improvement company gives a 30% discount
Furkat [3]

Answer:

1. $700

2.$515

Step-by-step explanation:

BECAUSE IF YOU DISCOUNT IT BY 30% JUST SUBTRACT IT LIKE $1000-30%=700

$2,545-30%=515

<h3>THATS My ANSWER</h3>
4 0
3 years ago
Read 2 more answers
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