Answer:
215
Step-by-step explanation:
Subtracting positive 215 from 163 gives you - 52.
Using the concept of variation, there is an inverse relationship between the <em>number</em><em> </em><em>of</em><em> </em><em>attendees</em><em> </em>and the <em>contribution</em><em> </em><em>made</em><em> </em><em>by</em><em> </em><em>each</em><em> </em><em>attendee</em><em>.</em><em> </em>
<u>Since the amount of chocolate decreases as the number of attendees increase; </u>
We use inverse variation to model the scenario :
- y = k/x ; <em>k</em><em> </em><em>=</em><em> </em><em>constant</em><em> </em><em>of</em><em> </em><em>proportionality</em><em> </em>
<u>Taking</u><u> </u><u>any</u><u> </u><u>pair</u><u> </u><u>of</u><u> </u><u>points</u><u> </u><u>:</u>
3000 = k/8
k = 3000 × 8
k = 24000
- Hence, the constant of variation is 24000
- The variation expression is y = 24000/x
- This means that the total cost of organising the gettogether is to be shared equally among the attendees
Therefore, the variation statement is "<em>the</em><em> </em><em>amount</em><em> </em><em>paid</em><em> </em><em>per</em><em> </em><em>attendee</em><em> </em><em>is</em><em> </em><em>inversely</em><em> </em><em>proportional</em><em> </em><em>to the</em><em> </em><em>number</em><em> </em><em>of</em><em> </em><em>people</em><em> </em><em>in</em><em> </em><em>attendance</em><em>.</em><em> </em>
Learn more :brainly.com/question/25480062
You have to power all the values in the brackets, like such:
(-3ab^3)^4 = (-3)^4 * a^4 * (b^3)^4 = 81*a^4*b^12