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
Sidana [21]
3 years ago
5

A family has a cell phone plan that costs $75 per month including taxes and fees. The plan lets the 5 members of the family shar

e 1,000 minutes of talk time per month and 400 text messages per month. Any minutes over 1,000 cost $1 per minute, and any texts over 400 cost $2 per text. Because of a family emergency, the family uses 1,050 minutes and 415 texts in March. Write an expression you could use to find the amount of the cell phone bill for March.
Mathematics
1 answer:
Alexeev081 [22]3 years ago
5 0
(1×50)+(2×15)because they used 50 and 15 more
You might be interested in
I need help with 1-3 i don’t understand that problems and its already over due
Nina [5.8K]

Step-by-step explanation:

For a quadratic equation y = ax² + bx + c, the vertex (the maximum or minimum point) is at x = -b/(2a).

1) y = -0.5t² + 2t + 38

The maximum is at:

t = -2 / (2 × -0.5)

t = 2

The maximum height is:

y = -0.5(2)² + 2(2) + 38

y = 40

The coordinates of the vertex are (2, 40).  That means the missile reaches a maximum height of 40 km after 2 minutes.

2) y = -4.9t² + 12t + 1.6

The maximum is at:

t = -12 / (2 × -4.9)

t = 1.22

The maximum height is:

y = -4.9(1.22)² + 12(1.22) + 1.6

y = 8.95

The coordinates of the vertex are (1.22, 8.95).  That means the missile reaches a maximum height of 8.95 m after 1.22 seconds.

3) y = -0.04x² + 0.88x

The maximum is at:

x = -0.88 / (2 × -0.04)

x = 11

The maximum height is:

y = -0.04(11)² + 0.88(11)

y = 4.84

The maximum height of the tunnel is 4.84 meters.

The maximum width is when y = 0.

0 = -0.04x² + 0.88x

0 = -0.04x (x − 22)

x = 22

The maximum width is 22 feet.

7 0
3 years ago
Solve 3[-x + (2 x + 1)] = x - 1.
Viktor [21]
The answer is -1. First you distribute the 3. Then u distribute the 3 again to the parentheses. Then solve it from there

4 0
3 years ago
Help fast this for a test please
weqwewe [10]
The similarity statement would be that all three of them have the same sides
7 0
3 years ago
Simplify
melomori [17]

Answer: 4\sqrt{3}

Step-by-step explanation:

For this exercise it is important to remember the following:

i=\sqrt{-1} \\\\i^2=-1

Given the following expression:

-2i\sqrt{-12}

You can notice that the radicand (the number inside the square root) is negative. Therefore, in order to simplify the expression, you need to follow these steps:

1. Replace \sqrt{-1} with i and simplify:

(-2i)(i)\sqrt{12}=-2i^2\sqrt{12}=-2(-1)\sqrt{12}=2\sqrt{12}

2. Descompose 12 into its prime factors:

12=2*2*3=2^2*3

3. Substitute into the expression:

=2\sqrt{2^2*3}

4. Since \sqrt[n]{a^n}=a, you can simplify it:

=(2)(2)\sqrt{3}=4\sqrt{3}

4 0
3 years ago
Jana pencil is 8.5cm long.teds pencil is longer.what is the length of Ted's pencil
Mumz [18]
This is not enough info to determine the length of teds pencil
3 0
3 years ago
Read 2 more answers
Other questions:
  • What is the mean 94, 86, 92, 100, 66, 99, 91, 83,
    11·1 answer
  • Find the z-score for the standard normal distribution where: P (z< -a) = 0.2451
    12·1 answer
  • 108 inches equals how many feet?
    8·2 answers
  • Odk even were to start on the question ​
    9·1 answer
  • Kiera baked 30 Oatmeal cookies and 48 chocolate chip cookies to package in plastic containers for her teacher friends at school.
    15·1 answer
  • Elena has 32 hair ties. Melanie has 8 hair ties the ratio of elena's hair ties to Melanie's hair ties is
    14·1 answer
  • How do you graph this f(x)= -3/2|x|+5 if x≤4​
    13·1 answer
  • Marking brainless!!!
    8·1 answer
  • Write 2x+5/x + 3/x+3 as a single fraction to it's simplest form​
    15·1 answer
  • what is the height of a rectangular prism with a base of 24 square feet and a volume of 456 cubic feet?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!