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kipiarov [429]
3 years ago
9

The cost to mail a package is $7 for the first 2 pounds and 30 cents for each additional ounce. Which of the following functions

represents the cost to mail a package if x is the number of ounces over 2 pounds?
Answers:
a) f(x) = 7 + 0.3x
b) f(x) = 14 + 0.3x
c) f(x) = 0.3(x + 2)
Mathematics
1 answer:
SOVA2 [1]3 years ago
5 0
A. f(x) = 7 + 0.3x

Just re-read your question! Hope I helped!
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Please help! can you explain it to me?
Semenov [28]

Answer:

It is increasing before x = -2 and from x = 0 to x = 2

Step-by-step explanation:

Option 1 - you can see the line going down starting at -2 and that means the line is decreasing but the choice says "It is increasing before x = 0". This contradicts the actual graph.

Option 2 - The line isn't increasing before x= -1, it's actually decreasing as seen in the graph.

Option 3 - The line doesn't even touch the point before x = -3 so this choice makes no sense.

Option 4 - Since all the other choices were eliminated this is the only choice standing. Looking at the line it is increasing before x = -2.

7 0
2 years ago
find the nonpermissible replacement for the variable x in this expression (x^2)/(2x-4) ? find the nonpermissible replacement for
Tcecarenko [31]
<span>The nonpermissible replacement for the variable x in this expression is x = 2


Substituting x = 2 yields:


(2)^2/(2(2)-4)


4/0, which is undefined.


I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!
</span>
5 0
2 years ago
1. Match the polynomial identity to the correct answer.
Katen [24]

Answer:

a: (a-b)(a+b);b: (a-b)(a^{2}+ab+b^{2});  c: (a^{2} +2ab+b^{2}); d: (a+b)(a^{2}- ab+b^{2})

Step-by-step explanation:

Given the expressions all that is required is to expand them (using the distributive property) to see which answers they match up to:

For a: (a-b)(a+b)=a^{2} +ab-ab-b^{2} =a^{2}-b^2

For b: (a-b)(a^2+ab+b^2)=a^3+a^2b+ab^2-a^2b-ab^2-b^3=a^3-b^3

For c calculate the square of a sum: (a+b)^2=a^2+ab+ab+b^2

(add like terms) c: a^2+2ab+b^2

For d: (a+b)(a^2-ab+b^2)=a^3-a^2b+ab^2+a^2b-ab^2+b^3=a^3+b^3

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3 years ago
Help on hw NEED ASAP WILL SEND 90$
andriy [413]
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8 0
2 years ago
Read 2 more answers
Finding the area of a circle with a diameter of 6ft. Use the formula A=<br> πr2.<br> HELP!!!
mylen [45]

Answer:

Step-by-step explanation:

If diameter is 6 then the radius is half of that or 3.

A = pi * r^2

A = pi * 3^2

A = 9pi ft^2

7 0
2 years ago
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