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Dvinal [7]
3 years ago
13

A friend gave Ms. Morris a $50 gift card for a local car wash. If each car wash costs $6, which equation shows the number of dol

lars left on the card? Let y be the value left on the card and x be the number of car washes used.
Mathematics
1 answer:
Advocard [28]3 years ago
6 0
50-6x=y
since each car wash is 6 dollars and you do not know the number of cars washed it is 6x 
50-6x is because you need to find out how much is left in the card so you subtract the total from how much she spent
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Find the balance in an account with $7,000 principal earning 5% interest compounded quarterly
nadya68 [22]

Answer:

The balance is \$11,505.34  

Step-by-step explanation:

we know that    

The compound interest formula is equal to  

A=P(1+\frac{r}{n})^{nt}  

where  

A is the Final Investment Value  

P is the Principal amount of money to be invested  

r is the rate of interest  in decimal

t is Number of Time Periods  

n is the number of times interest is compounded per year

in this problem we have  

t=10\ years\\ P=\$7,000\\ r=0.05\\n=4  

substitute in the formula above  

A=\$7,000(1+\frac{0.05}{4})^{4*10}=\$11,505.34  

3 0
3 years ago
Abby wants to use her savings of 1,325 to learn yoga. The total charges to learn yoga include a fixed registration fee of $35 an
NISA [10]

Answer:

Maximum number of months Abby can learn yoga is 25 months.

Step-by-step explanation:

We have given,

Total savings of Abby = $1325

Total charges to learn yoga is given as:

A fixed registration fee = $35

And a monthly fee = $50

Since the registration Abby pays only once. So we can calculate the remaining saving amount for Abby.

i.e Remaining saving amount after registration fee = $ (1325 - 35) = $1290

Now, from the remaining amount after paying registration fee , let the Abby learn yoga for x months.

To find maximum number of months we need to satisfy a equation given as:

x*50 \leq 1290

or x\leq \frac{1290}{50} \\x\leq 25.8

Since we got x ≤ 25.8 months   ≈ 25 months (in integer form)

So maximum number of months Abby can learn yoga is 25 months.


3 0
3 years ago
Read 2 more answers
4-14 Practice Problems
Kazeer [188]

Answer:

5 months

Step-by-step explanation:

Equation A: 15+30x

Equation B: 35x

In 5 months Gym a will cost 15+30(5) or $175 and Gym B will also cost $175.
Basically all you have to do is apply reasonable numbers until you find out where the costs will meet up.

6 0
2 years ago
Trey is solving his equation, and the last line of his work is "-2 = 2". What does this mean?
oksian1 [2.3K]

Answer:

it means that his equation is not true.

Step-by-step explanation:

-2=2 is obviously incorrect, so we must assume that the equation isn't true.

3 0
3 years ago
the temperature is 75 degrees fahrenheit. if the temperature decreases 15 degrees, what is the new temperature
lisabon 2012 [21]

Answer: 60 degrees!

Step-by-step explanation:

75 - 15 = 60

7 0
3 years ago
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