Step-by-step explanation:
xy^2 is right option
so option D is right
Answer: DBA QUESTIONS
Step-by-step explanation:
The teacher has a list of questions that will be asked word for word that are available in the module page thing, usually it is in pdf form try looking underneath the info about the teacher. You might have to scroll a bit.
Answer:
D
Step-by-step explanation:
Direct Variation takes the form
Inverse Variation takes the form ![A=k(\frac{1}{B})](https://tex.z-dn.net/?f=A%3Dk%28%5Cfrac%7B1%7D%7BB%7D%29)
- Where A and B are the 2 variables associated and k is the proportionality constant.
<em>Since </em><em>number of dolls [N] </em><em>varies </em><em>directly </em><em>with </em><em>advertising budget [A],</em><em> in our equation, </em><em>A should go in the numerator</em><em> and since </em><em>number of dolls [N] </em><em>varies </em><em>inversely</em><em> with </em><em>price of dolls [P]</em><em>, </em><em>P should go in the denominator.</em>
Thus we can write our equation as:
![N=k(\frac{A}{P})](https://tex.z-dn.net/?f=N%3Dk%28%5Cfrac%7BA%7D%7BP%7D%29)
Solving this equation for k given the information "The company sold 5200 dolls when $26,000 was spent on advertising and the price of a doll was set at $30":
![N=k(\frac{A}{P})\\5200=k(\frac{26,000}{30})\\5200=k(866.67)\\k=\frac{5200}{866.67}=5.99](https://tex.z-dn.net/?f=N%3Dk%28%5Cfrac%7BA%7D%7BP%7D%29%5C%5C5200%3Dk%28%5Cfrac%7B26%2C000%7D%7B30%7D%29%5C%5C5200%3Dk%28866.67%29%5C%5Ck%3D%5Cfrac%7B5200%7D%7B866.67%7D%3D5.99)
Rounding
to ![k=6](https://tex.z-dn.net/?f=k%3D6)
Now, given that we want to find the number of dolls [N] when
and
, we have:
dolls
Answer choice D is correct.