1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Arisa [49]
3 years ago
14

Suppose that a new employee starts working at ​$7.67 per hour and receives a 3​% raise each year. After time​ t, in​ years, his

hourly wage is given by the equation .y=$7.67(1.03)t. Find the amount of time after which he will be earning​ $10.00 per hour.
After what amount of time will the employee be earning​ $10.00 per​ hour?
Mathematics
1 answer:
Andrews [41]3 years ago
8 0

Answer:

  9 years

Step-by-step explanation:

You want to find t such that y=10.

  10 = 7.67(1.03)^t

  10/7.67 = 1.03^t . . . . . divide by 7.67

  log(10/7.67) = t·log(1.03) . . . . . . take logs

  log(10/7.67)/log(1.03) = t ≈ 8.9743 . . . . . years

After about 9 years, the employee will be earning $10 per hour.

You might be interested in
A simple random sample of size nequals15 is drawn from a population that is normally distributed. The sample mean is found to be
Bond [772]

Answer with explanation:

To test the Significance of the population which is Normally Distributed we will use the following Formula Called Z test

   z=\frac{\Bar X - \mu}{\frac{\sigma}{n}}

\Bar X =31.1\\\\ \sigma=6.3\\\\ \mu=25\\\\n=15\\\\z=\frac{31.1-25}{\frac{6.3}{\sqrt{15}}}\\\\z=\frac{6.1\times\sqrt{15}}{6.3}\\\\z=\frac{6.1 \times 3.88}{6.3}\\\\z=3.756

→p(Probability) Value when ,z=3.756 is equal to= 0.99992=0.9999

⇒Significance Level (α)=0.01

We will do Hypothesis testing to check whether population mean is different from 25 at the alpha equals 0.01 level of significance.

→0.9999 > 0.01

→p value > α

With a z value of 3.75, it is only 3.75% chance that ,mean will be different from 25.

So,we conclude that results are not significant.So,at 0.01 level of significance population mean will not be different from 25.

3 0
3 years ago
S(t)=sqrt3t+1 at t=2
avanturin [10]

Answer:

s(2) = √7

Step-by-step explanation:

s(2) = √(3[2] + 1) = √7

5 0
3 years ago
What is the value of the fourth term in a geometric sequence for which a1= 30 and r = 1/2
Viktor [21]

Answer:

a_{4} = 3.75

Step-by-step explanation:

The n th term of a geometric sequence is

a_{n} = a₁(r)^{n-1}

where a₁ is the first term and r the common ratio

Here a₁ = 30 and r = \frac{1}{2}, thus

a_{4} = 30(\frac{1}{2}) ^{3} = 30 × \frac{1}{8} = \frac{30}{8} = \frac{15}{4} = 3.75

4 0
3 years ago
Multiply 2x(4x^2+x+3)
Marina CMI [18]

Answer:

8x^3+2x^2+6x

Step-by-step explanation:

2x(4x^2+x+3)

using distribution -

8x^3+2x^2+6x

hope this helps!!

7 0
3 years ago
A sample of Iron-59 contains 50 mg. One hundred days later, the sample contains 10.75 mg. What is the half-life of iron-59, in d
exis [7]

Answer:

t_{1/2}=45.09 d    

Step-by-step explanation:

We can use the decay equation:

M=M_{0}e^{-\lambda t}

  • M(0) is the initial mass
  • M is the mass after t (1000 days) time
  • λ is the decay constant

But:

\lambda = ln(2)/t_{1/2}

  • t(1/2) is the half-life.

So, we can rewrite the initial equation:

M=M_{0}e^{-\frac{ln(2)}{t_{1/2}}t}

Now, we just need to solve it for t(1/2):

ln(\frac{M}{M_{0}})=-\frac{ln(2)}{t_{1/2}}t

t_{1/2}=-\frac{ln(2)}{ln(\frac{M}{M_{0}})}t

t_{1/2}=-\frac{ln(2)}{ln(\frac{10.75}{50})}100                

t_{1/2}=45.09 d    

I hope it helps you!

5 0
3 years ago
Other questions:
  • Roberto will save 1/6 of his allowance each day.If he gets $2.00 a day, about how much money will he save each day?Round your an
    9·2 answers
  • Factor cot^2x-cotx-42
    13·1 answer
  • Find the distance between the points (3, 8) and (-1, 9). Round the distance to the nearest hundredth.
    10·1 answer
  • What is the discriminant in the quadratic equation x2 + 11x + 121 = x + 96? <br>      A. 0 B. 100 C. 20 D. 200
    15·2 answers
  • The gandhara region is the home of many portrayals of ____.
    14·1 answer
  • What are common factors of 36 and 14
    9·1 answer
  • Graph 1<br> Parallel<br> Perpendicular<br> Neither
    7·1 answer
  • Triangular sail has a baseline of 2.5 m. The area of the sail 3.75 m². How tall is the sail?
    10·1 answer
  • 3(3x+9)=-5-2x what is x
    12·1 answer
  • Find the slope between the two points: (20, 8), (9, 16)
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!