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
gladu [14]
2 years ago
10

Calls from a call box are charged per minute at one rate for the five minutes, then a different rate for each additional minute.

If a 7-minute call costs $4.25 and a 12-minute call costs $5.50, find each rate.​
a.$ 1.50 per minute at one rate for the first 5 minutes and $0.50 per minute thereafter
b.$3.20 per minute at one rate for the first 5 minutes and $0.55 per minute thereafter
c.$0.75 per minute at one rate for the first 5 minutes and $0.25 per minute thereafter
d.$2.40 per minute at one rate for the first 5 minutes and $0.75 per minute thereafter
Which answer is it ?????????
Mathematics
1 answer:
nirvana33 [79]2 years ago
5 0

Answer:

  c.  $0.75 per minute at one rate for the first 5 minutes and $0.25 per minute thereafter

Step-by-step explanation:

The last 5 minutes of the 12-minute call cost ...

  $5.50 -4.25 = $1.25

so the per-minute rate at that time is ...

  $1.25/(5 min) = $0.25/min . . . . . . . . matches choice C only

__

You know the answer at this point, but if you want to check the rate for the first 5 minutes, you can subtract 2 minutes from the 7-minute call to find that ...

  The first 5 minutes cost $4.25 - 2·0.25 = $3.75, so are charged at ...

     $3.75/(5 min) = $0.75/min . . . . . . . matches choice C

You might be interested in
Which equation represents the data shown in the table provided in the image?
VladimirAG [237]

The correct answer is A. y = 2x +1

Explanation:

An equation is a statement that shows equality. In this context, the equation should lead to two equal numbers even if the values of y and x change. In this context, the correct equation is y= 2X + 1 because this is the only one, in which, the value of Y is always equivalent to 2x + 1. To prove this, let's replace y and x for the values of the table.

First  column

5 = 2 · 2 + 1

5 = 4 + 1

5 = 5

Second Column

9 = 2 · 4 + 1

9 = 8 + 1

9 = 9

Third column

13 = 6 · 2 + 1

13 = 12 + 1

13 =  13

Fourth column

17 = 8 · 2 + 1

17 = 16 + 1

17 = 17

4 0
2 years ago
I have 5min can sb help please
Makovka662 [10]

Answer:

Use M a t h W a y

Step-by-step explanation:

it all together

7 0
2 years ago
The total number of miles Jeremy walked on a hike can be represented by using the formula. If and n represents the total number
nadezda [96]

Answer:A

Step-by-step explanation:

just took test

6 0
3 years ago
Twenty less than the product of 3 and a number is -29. What is the number?
Furkat [3]

Answer:x(x-20)=x•x + x•-20

          = x^2 + -20x

          = x^2 - 20x

Step-by-step explanation:

6 0
2 years ago
Write an equation in standard form of an ellipse that is 28 units high and 20 units wide
cestrela7 [59]
The standard form of ellipse with vertical major axis and center at the origin is:
x^2/b^2+y^2/a^2=1, a>b
2a=length of the major axis=28
a=14
a^2=196

2b=length of minor axis=20
b=10
b^2=100

x^2/196+y^2/100=1

making y the subject we get

y=5/7(196-x²)^0.5
8 0
3 years ago
Other questions:
  • June father is six times as old as June the sum of their age is no less than 77 what is the youngest age June can be
    11·1 answer
  • Was is 29.15 as a mixed number in simplest form
    14·1 answer
  • Which statements best describe the dot plot or box plot? Check all that apply
    13·1 answer
  • Which equation represents a line that passes through (2,-1/2) and has a slope of 3 ?
    7·1 answer
  • Lena found a 5/8
    8·2 answers
  • 3 square root of 721
    7·1 answer
  • 20 POINTS!!!! If eight is added to twice a number and the sum is multiplied by five result is the same as if the number is multi
    7·1 answer
  • Last one anyone that can help me out?
    8·1 answer
  • There are three groups of elderly residents at Bayside Residential Home, one with 14 members, the next with 23 members, and the
    12·1 answer
  • Write the answer to the problem below, using the correct number of significant figures. 7.4 * 3.205 =
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!