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
Marianna [84]
3 years ago
8

2 Mini Lesson: A wireless phone plan costs Eric $35 for a month of service during which he sent 450 text messages. If he was cha

rged a fixed fee of $12.50, how much did he pay per text? Equation: 12.50 + 450t = 35 Explain how each term was determined from the word problem. ​
Mathematics
1 answer:
mafiozo [28]3 years ago
4 0

9514 1404 393

Explanation:

From your knowledge of the world, you know that ...

  • the cost of multiple items is the sum of their individual costs
  • multiplication can be used for repeated addition
  • utility fees are the sum of fixed fees and usage-related fees
  • for a phone plan, text message costs are a usage-related fee

The problem statement asks for the cost of a single text message. For the purpose of finding that value, it is convenient to represent it using the variable <em>t</em>. The problem statement says Eric was billed for 450 text messages, so we expect his usage-related fee to be 450t, the sum of the costs of 450 messages--using multiplication for the repeated sum.

The problem statement says Eric was billed 12.50 for fixed fees. So, we expect Eric's total bill to be ...

  fixed fees + usage-related fees = 12.50 + 450t

The problem statement says Eric's total bill was 35.00, so we assume that is the sum of the above-listed fees. That is, the two ways to express Eric's total bill are equal.

  12.50 +450t = 35.00

You might be interested in
What is 3.55 divided by 5 equal 3 tenthsdivided by 5 + 5 hundredths divided by 5 equal
levacccp [35]
No it is not equal. 3.55 divided by 5=0.71.    0.3 divided by 5+ 0.05 divided by 5 equals to 0.07.
7 0
3 years ago
1. The manager of FrozonAir Refrigerator factory notices that on Monday it cost the company a total of $25,000 to build 30 refri
Vinvika [58]

Answer:

The fixed costs per day for the factory is $10,000 and marginal cost of one refrigerator for $500

Step-by-step explanation:

Let

Cost per refrigerator (marginal cost) = r

Fixed costs per day for the factory = f

Total cost = variable cost + fixed cost

Monday

25,000 = 30r + f

Tuesday

30,000 = 40r + f

Using Monday,

f = 25000 -30r

Substitute f = 25000 - 30r into Tuesday

30,000 = 40r + f

30,000 = 40r + (25,000 -30r)

30,000 = 40r + 25,000 - 30r

Collect like terms

30,000 - 25,000 = 40r - 30r

5,000 = 10r

Divide both sides by 10

r = 5,000 / 10

= 500

r = $500

Substitute r= 500 into Monday equation

f = 25,000 -30r

= 25,000 - 30(500)

= 25,000 - 15,000

= 10,000

f = $10,000

Therefore, the fixed costs per day for the factory is $10,000 and marginal cost of one refrigerator for $500

7 0
3 years ago
The angles of two pentagons are all equal to 108°. The length of one side of each pentagon measures 11 cm.
max2010maxim [7]
There is not enough information to determine whether the pentagons are congruent.

3 0
3 years ago
Round to the nearest hundred and solve a problem. 372,864+214,209=
Taya2010 [7]

Answer:587,073

Step-by-step explanation:

8 0
3 years ago
Which of the following is not a factor of x^3 – 3x^2 – 4x + 12?
Slav-nsk [51]

Answer:

c. (x + 3)

Step-by-step explanation:

using factor theorem

if x - 3 is a factor then p(a) = 0

p(a)= x^3 - 3x^2 - 4x + 12

a.(x-3)

p(3) = (3)^3 - 3(3)^2 - 4(3) + 12

= 27 - 27 - 12 + 12

= 0

therefore x-3 is a factor

b.(x + 2)

p(-2) = (-2)^3 - 3(-2)^2 - 4(-2) + 12

= -8 -12 + 8 + 12

,= 0

therefore x + 2 is a factor

c.(x + 3)

p(-3) = (-3)^3 - 3(-3)^2 - 4(-3) + 12

= -27 -27 + 12 + 12

= -30

therefore x + 3 is not a factor

d.(x-2)

p(2) = (2)^3 - 3(2)^2 - 4(2) + 12

= 8 -12 - 8 + 12

= 0

therefore x - 2 is a factor

4 0
3 years ago
Other questions:
  • anjaya is making punch. He uses 1··3c of pineapple juice for every 3··4c of orange juice. How many cups of pineapple juice does
    8·1 answer
  • Joe's taxable income is $67,825. Use this tax schedule to calculate the total amount he owes in taxes.1. $8,993.752. $13,380.003
    14·2 answers
  • The ladybugs are planting a garden. They have 25-cm-by-10 cm rectangle for flowers. Each flower needs exactly 1 square centimete
    5·2 answers
  • Would you rather have a pool that is 20m×8m×6m OR a pool that is 1550cm×650cm×725cm?
    12·2 answers
  • The following graph shows the cost c, in dollars, of p pounds of strawberries at a local grocery store.
    7·1 answer
  • Which two values of x satisfy the equation square root 3-2cos x = 2?
    10·1 answer
  • Qual é a frequência de cada gênero de leitura citados?​
    6·1 answer
  • For a data set of the pulse rates for a sample of adult females, the lowest pulse rate is 33 beats per minute, the mean of the l
    9·1 answer
  • How do you graph f(x)=-0.5+2, x&lt;2
    9·1 answer
  • -5 3/4 - 3 1/2 =?<br><br> A)2 1/4<br> B)-9 1/4<br> C)-2 1/4<br> D)-8 2/3
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!