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labwork [276]
3 years ago
5

Keith has $100 in a savings account at the beginning of the summer. He makes $25 each week at his babysitting job. He wants to h

ave more than $350 in his savings account at the end of the summer. Write an inequality that represents this situation after x weeks. Do not include spaces in your answer. You do NOT have to solve the inequality!
Mathematics
1 answer:
viktelen [127]3 years ago
7 0

Answer:

100+25x > 350

Step-by-step explanation:

We are given the following in the question:

Keith has $100 in a savings account at the beginning of the summer.

Let x be the number of weeks he works.

He makes $25 each week at his babysitting job.

He wants to earn more than $350 dollars during summer.

Total money earned by job = 25x

His total money in account should be more than 350$.

We can write this with the help of inequality:

100+25x > 350

The following inequality represents the given situation.

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the function 56-4y=-5x can be used to determine the total amount of money in a coin jar,y,after money is added for x days. what
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Answer:

23

Step-by-step explanation:

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Suppose that the ages of members in a large billiards league have a known standard deviation of σ = 12 σ=12sigma, equals, 12 yea
asambeis [7]

Answer:

n\geq 23

Step-by-step explanation:

-For a known standard deviation, the sample size for a desired margin of error is calculated using the formula:

n\geq (\frac{z\sigma}{ME})^2

Where:

  • \sigma is the standard deviation
  • ME is the desired margin of error.

We substitute our given values to calculate the sample size:

n\geq (\frac{z\sigma}{ME})^2\\\\\geq (\frac{1.96\times 12}{5})^2\\\\\geq 22.13\approx23

Hence, the smallest desired sample size is 23

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3 years ago
a game room floor that is 120 feet by 75 feet. a scale drawing of the floor on grid paper uses a scale of 1 unit:5 feet. what ar
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24 feet by 15 feet

You divide each nukber by 5 bevause that is the given scale factor.
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4 years ago
Is this odd f(x)=X^3-X^2
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No it is not I believe
8 0
4 years ago
Read 2 more answers
A bacteria culture grows with constant relative growth rate. The bacteria count was 1,920 after 4 hours and 1,966,080 after 12 h
attashe74 [19]

From the calculation, the growth rate is 0.88.

<h3>What is the growth rate?</h3>

To find the relative growth rate

P1 = Poe^rt

P2 = Poe^rt

Thus;

1920 = Poe^4r ------ (1)

1966080 =Poe^12r -------(2)

P2/P1 gives;

1966080/1920 = Poe^12r/Poe^4r

1024 = e^12r/e^4r

1024 =e^8r

1024 = (e^r)^8

2^10 = (e^r)^8

e^r = 2^1.25

e^r = 2.38

r = ln(2.38)

r = 0.88

The initial size of the culture is;

1920 = Poe^(0.88 * 4)

Po = 1920/e^(0.88 * 4)

Po = 57

The  expression for the exact number of bacteria after t hours is

P(t) = 57e^0.08t

The growth (in bacteria per hour) after 9.5 hours is

P(t) = 57e^(0.88 * 9.5)

P(t) = 243544

For the number to reach 72,000;

72,000 =  57e^0.88t

72,000/57 = e^0.88t

ln 126 = ln[e^0.88t]

4.8 = 0.88t

t = 4.8/0.88

t = 5.5 hours

Learn more about exponential growth;brainly.com/question/13674608

#SPJ1

8 0
2 years ago
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