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
leonid [27]
3 years ago
13

Joanna joins a CD club. She pays $7 per month plus $10 for each CD that she orders. Write an inequality to find how many CDs she

can purchase in a month if she spends no more than $100. Identify what your variable represents.
Mathematics
1 answer:
Effectus [21]3 years ago
6 0
Lets use x as the number of CD's that she will buy in a month. So knowing that, our inequality can look like this. 7 + 10x < or = 100. Why? because we will have to multiply 10 with the number of CDs she will purchase in a month to get the total she spends. Hence 10 times x. She also has to add a 7 membership fee per month to this. Also, she has to remember that what she paid has to be less or equal to 100 because the problem states that she spends no more than 100 a month. 
You might be interested in
Solve for x: 8x-5= 6x + 1
Romashka-Z-Leto [24]

Step-by-step explanation:

8x-5= 6x + 1

8x - 6x = 1+5

2x = 6

x= 2/6 = 1/3

x= 0.333

6 0
3 years ago
The vertex of this parabola is at (-5,-2). when the x-value is -4, the y-value is 2. what is the coefficient of the squared expr
Westkost [7]
Vertex:  (-5,-2); parabola opens up; 

General form of the equation for a vertical parabola opening up is:

y-k = a(x-h)^2; knowing that the vertex is at (-5,-2), we can write:

y+2 = a(x+5)^2.  We need to find the value of the coefficient a.

From the graph we see that y is 10 when x is approx. -1 3/4 (or -7/4).

subst. these values into y+2 = a(x+5)^2, we get:

10 + 2 = a(-7/4 + 5)^2, or 12 = a(13/4)^2, or   1 = a(169/16).

Solving for a:  a = 16/169 = 0.09, or approx 16/160, or 1/10.  Unfortunately, this is not close to any of the four answer choices.

I thought it best to try again, and fortunately my second try was correct:

10+2 = a(13/4)^2, or  (169/16)a.  Thus, 12 = a(169/16)

                                   12
Solving for a:  a = ------------- = 1.14.  The answer choice closest to this is 1.
                                169/16

Answer A is correct.



6 0
3 years ago
Read 2 more answers
The table represents a linear equation.
storchak [24]

Answer:

y – 8 = –0.2(x + 10)

Step-by-step explanation:

4 0
3 years ago
In Belmont it snowed 1 3/8 inches in the morning and 4 3/8 inches in the afternoon . What was the total amount of snowfall?
Alja [10]
<h2>Answer:</h2>

5 3/4 inches

<h2>Step-by-step explanation:</h2><h3>Known :</h3>
  • It snowed 1 3/8 in the morning
  • It snowed 4 3/8 in the morning

<h3>Asked :</h3>
  • The total amount of the snowfall

<h3>Solution :</h3>

We can add the amount of snowfall in Belmont in the afternoon and in the morning to find the total amount of snowfall.

4 3/8 + 1 3/8

= (4 + 1) + (3/8 + 3/8)

= 5 + 6/8

= 5 6/8

= 5 3/4

<h3>Conclusion :</h3>

The total amount of snowfall is 5 3/4 inches

8 0
2 years ago
I need help with number 21 please!
seraphim [82]
The coordinate point is 8
6 0
3 years ago
Other questions:
  • How do you graph this inequality on a number line? <br><img src="https://tex.z-dn.net/?f=r%20%5Cleqslant%20%20-%209" id="TexForm
    5·1 answer
  • What percent of 850 is 531?
    14·2 answers
  • At full price, Melvin would pay 1.6791.6791.679 dollars per liter of gasoline. Using his loyalty card, Melvin only pays 1.4391.4
    14·2 answers
  • Michael is a basketball player who regularly shoots sets of 2 free-throws. Suppose that each shot has probability 0.60. , point,
    11·1 answer
  • 1. Construct a square by using only a compass and straightedge. Explain your steps clearly.
    11·1 answer
  • Help! i just need the answers. maybe some explanations would be good too :)
    9·1 answer
  • Can anyone answer <br><br> Please find the area of this
    12·1 answer
  • !! HELP ASAP !!
    15·1 answer
  • What is the standard form of the points (-3,4) (2,-6)
    7·1 answer
  • If anyone can help with this please
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!