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liq [111]
2 years ago
10

The telephone company offers two billing plans for local calls. Plan 1 charges $36 per month for unlimited calls and Plan 2 char

ges $13 per month plus $0.05 per
call

a. Use an inequality to find the number of monthly calls for which Plan 1 is more economical than Plan 2

b. Explain the meaning of the answer to part a.

a. Let x represent the number of monthly calls. The answer is

(Type an inequality.)
Mathematics
1 answer:
Katyanochek1 [597]2 years ago
5 0

Answer:

After 460 calls plan 1 is more economical than plan 2

Step-by-step explanation:

Plan 1: 36x + 0y

Plan 2: 13x + 0.05y

36x < 13x + 0.05y

36x - 13x < 0.05y

23x < 0.05y

23/0.05x < y

460x < y

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Write an expression equivalent to the expression -1/2(-3/2x+6x+1)-3x
stiv31 [10]

Answer:

-21/4x-1/2

Step-by-step explanation:

-1/2(-3/2x+6x+1)-3x

3/4x-3x-1/2-3x

3/4x-3x-3x-1/2

3/4x-6x-1/2

3/4x-24/4x-1/2

-21/4x-1/2

4 0
3 years ago
One-fourth of a number is 3 more than one-seventh of the same number.<br> What is the number?
uysha [10]
I set it up as an equation. 1/4x = 1/7x + 3. After you solve it out, it’s 28.
4 0
3 years ago
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Solve the quadratic formula <br> 2x^2+9x=-7
andriy [413]

Answer:

Step-by-step explanation:

2x² + 9x = -7

2x² + 9x + 7 = 0

When we multiply we should get 2*7 = 14 and when we add we should get 9. Find the factors of 14 ---> 1,2,7,14. Factors are 2,7 as when we multiply we get 14 and we we add, get 9

2x² + 2x + 7x + 7 = 0

2x( x + 1) + 7 (x + 1) = 0

(x  + 1)(2x + 7) = 0

                   

5 0
3 years ago
AX + B = C what is X equal to?
elena-14-01-66 [18.8K]

Answer:

x is a variable

Step-by-step explanation:

what happens an squared plus B equals C and what I want to do is solve for a so again what we want to do is when we're taking solver a we want to isolate the variable get the variable by itself so the data that need to look at well what is happening on my variable a well you can see me as being multiplied by X and it's being added by B so I need to undo those but we got to make sure we undo them in a certain upper certain order which we call the reverse order of operations which is like the order of operations but the reverse method meaning I'm gonna undo addition or subtraction first so you can see that since my variable a is being added by B I need to undo that by subtracting B and I'll use my subtraction property of equality that's going to now subtract a 0 and then these C minus B are not like terms so I'm going to write ax is equal to C minus B now I need to solve for a so I need to look at and say alright my a is being x over X so the inverse operation of multiplying is dividing by X so therefore have a equals C minus B divided by X now sometimes you could say alright that's correct but we could also divide this X into both of these terms and I'm going to rewrite this in a different form I could say a equals C over X minus B over X alright so what I'm doing is are just dividing those through

hope this helps

5 0
3 years ago
I need really big help now
Romashka [77]

Answer:

its 375


Step-by-step explanation:


5 0
3 years ago
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