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
GarryVolchara [31]
3 years ago
10

A cell phone plan has a monthly cost that is shown in the table below. What is the correct statement regarding the average rate

of change during the 40-minute time of talk?
A. The average rate of change is $1.00, meaning that for every ten minutes of talk time, the monthly bill increases by $1.00.

B. The average rate of change is $1.00, meaning that for each minute of talk time, the monthly bill increases by $0.10.

C. The average rate of change is $0.10, meaning that for every ten minutes of talk time, the bill increases by $0.10.

D. The average rate of change is $0.10, meaning that for each minute of talk time, the monthly bill increases by $0.10.

Mathematics
1 answer:
FromTheMoon [43]3 years ago
5 0
A, its the only option that states that the monthly bill increases by $1.00 every ten minutes of talk time
You might be interested in
How many solutions does the system (picture) have?
kvv77 [185]
None .. theres no solution
4 0
4 years ago
I'm really confused on this one please answer !!!!!!!
Sedbober [7]
The formula for finding the area of a rug: A = s^2

Plugging in the values we know, we can solve for s.

79 = s^2

Take the square root of both sides.

\sqrt{79} = s

\sqrt{79} is approximately equal to 8.89

So, 8.89 feet is the answer.
4 0
3 years ago
Determine the whether the quadratic equation below has a maximum or minimum.<br> y = 4x² – 3x - 43
Alex
A minimum because the function is positive. Positive quadratic functions always concave upwards (in a “bowl-like” shape), creating a curve/minimum at the bottom.
4 0
2 years ago
Read 2 more answers
The spoke of a wheel reaches from the center of the wheel to its rim. If the circumference of the rim of the wheel is 48 inches,
levacccp [35]
The circumference of a circle is πdYou know the circumference of the rim of the wheel is 48 inches so to find the diameter (d) you divide 48/3.14 which gives you 15.29 inches. As the spoke goes from the center to its rim, it it is the radius, which is half of the diameter.15.29/2 is B) 7.64 inches.
8 0
3 years ago
During a 90-day monsoon season, daily rainfall can be modeled by sinusoidal functions. A low of 4 inches of rainfall was recorde
Phoenix [80]

Answer:

25.4\,days \leq t \leq 34.6\,days

Step-by-step explanation:

Let consider the following model:

c(t) = A \cdot \sin \left(\frac{2\pi \cdot t}{T}  \right) + \bar c

The average is given by the following formula:

\bar c = \frac{c_{min}+c_{max}}{2}

The maximum value is:

c_{max} = 2 \cdot \bar c - c_{min}

c_{max} = 2\cdot (8\,in) - 4\,in

c_{max} = 12\,in

Amplitude is:

A = 12\,in - 8\,in

A = 4\,in

The sine function has a periodicity of 2\pi, where is minimum is reached at \theta = \frac{3\pi}{2}, when t = 30.  The period of the cycle is:

T = \frac{2\pi}{\frac{3}{2}\pi }\cdot (30)

T = 40

The complete expression is:

c(t) = 8\,in + 4\,in \cdot \sin \left(\frac{2\pi}{40}\cdot t  \right)

The times associated with c = 5\,in are, respectively:

8\,in + 4\,in \cdot \sin \left(\frac{2\pi}{40}\cdot t  \right) = 5\,in

4\,in \cdot \sin \left(\frac{2\pi}{40}\cdot t  \right) = -3\,in

\sin \left(\frac{2\pi}{40}\cdot t  \right) = -0.75

t  = \frac{40}{2\pi}\cdot \sin^{-1} (-0.75)

Instants are, respectively:

t_{1} \approx 25.4\,days

t_{2} \approx 34.6\,days

Period is:

25.4\,days \leq t \leq 34.6\,days

8 0
3 years ago
Other questions:
  • Please help someone asap six points!
    7·2 answers
  • Hey can you please help me out on my question posted picture
    8·1 answer
  • Algebra 2 question, can someone check if its right
    15·1 answer
  • PLEASE HELP ME The cost, C, to produce b baseball bats per day is modeled by the function C
    10·2 answers
  • Find two numbers whose product is 80 and whose sum is 18
    13·1 answer
  • What is the Area of this parallelogram
    14·1 answer
  • During a sale , a shop allows 20%
    5·2 answers
  • 2) Find the degree of the following polynomials<br>a) x+3x+2​
    15·1 answer
  • I need help with this!
    9·1 answer
  • Help me to solve this plz
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!