The teachers’ edition of a statistics textbook sells for $150, and students’ edition of the book sell for $50 each. Which function can be used to find the average cost per book if two teachers’ editions and x students’ editions are purchased? a) f(x)= 150+50x over 1+x
b) f(x)= 150+50x over 2+x
c) f(x)= 300+50x over 1+x
d) f(x)= 300+50x over 2+x
Answers
Answer: d) f(x)= 300+50x over 2+x
Step-by-step explanation:
Since, the money earned by a teacher in selling a book = $ 150
⇒ The money earned by 2 teacher = $ 300
Now, the money earned by a student in selling the book = $ 50
⇒ The money earned by x students = 50x
Thus, the total collection by 2 teacher and x students = 300 + 50x
And, the total persons = 2 teachers + x students = 2 + x
⇒ Option d) is correct.
Sum of all / total number of things
The sum of that would be 300 + 50x
The total number of things would be 2+x
Therefore it is
(300+50x) /2+x
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see attached
Step-by-step explanation:
The dilation factor of 1/2 moves each point to half its previous distance from the origin.
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The quantity from which the percentage has to be determined = 1321
Then
24% of 1321 = (24/100) * 1321
= 31704/100
= 317.04
So from the above deduction we can easily say that 24% of the number 1321 is 317.04. I hope the procedure is not very complicated for you to understand. You can use this method for solving similar type of problems in future without requiring any help from anyone. Only be careful while calculating. Other than the calculation part, there is nothing tough about the problem.
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the 2 numbers that add up to 14 that would give the largest product is less than 120
maybe you mean 120 is negative?
idk i might be wrong