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lilavasa [31]
3 years ago
14

Fuel from Shell costs $2 per gallon and fuel from Speedway costs $3 per gallon. You have at most $30 to spend on fuel.​

Mathematics
1 answer:
FinnZ [79.3K]3 years ago
4 0

Answer:

You would want to go to shell

Step-by-step explanation:

At shell you spend 2 dollars for for fuel and your have 30 bucks you could get 15 gallons and at speedway you can get 10 gallons with 30 bucks

I hope you found this useful -Chris

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At 7:00 A.M., Alicia pours a cup of tea whose temperature is 200°F. The tea starts to cool to room temperature (72°F). At 7:02 A
alexgriva [62]

Answer: A) Option B

B) 22.3 minutes.

Step-by-step explanation:

The temperature decreases in an exponential decrease, this means that we can write the equation as:

T(x) = A*r^x + B

Where A is the difference between the initial temperature and the room temperature, B is the room temperature, and r is a positive number smaller than 1, that says "how fast" the temperature decreases (and x is the variable, in units of time)

We know that the initial temperature

A = 200° - 72° = 128°

B = 72°

T(x) = 128°r^x + 72°

The only option with those two values is option B.

T(x) =  128(0.989)^x + 72

We should check that when x = 2m, the temperature must be 197°

T(2m) = 128*(0.989)^2 + 72 = 197.2° (that we can round down to 197°)

So this equation is correct

Now we want to find the time such the temperature is 172°F

then:

172° = 128°(0.989)^x + 72°

100° = 128°(0.989)^x

100/128 = (0.989)^x

x = ln(100/128)/ln(0.989) = 22.3 minutes.

Let's check in our equation:

T(22.3) =  128°(0.989)^22.3 + 72 = 172°

8 0
3 years ago
Gina saw twice as many tigers as lions at the zoo. The number of bears she saw was 7 less than the number of tigers. She saw fiv
Fynjy0 [20]
Gina saw 25 monkeys 
25 ÷ 5 = 5 
5 + 7 = 12
12 + 6 = 18
25 + 5 +12 + 6 = 48 animals 
gina saw 48 animals at the zoo
8 0
2 years ago
Alana and Ramiro are writing an article for the school newspaper about whether their classmates prefer to buy their lunch or bri
MrRissso [65]

Answer:Ramiro’s method is

Step-by-step explanation:

Did the assignment

3 0
3 years ago
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Harrizon [31]
Your answer is going to be Letter B
8 0
3 years ago
PLEASE HELP FAST The Booster Club raised $30,000 for a sports fund. No more money will be placed into the fund. Each year the fu
zloy xaker [14]

Answer:

c. $24,435

Step-by-step explanation:

30000(1 - .05)^{4} = 24,435.19

3 0
3 years ago
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