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solmaris [256]
4 years ago
15

Evaluate the expression for x = 3 and y = 6. 5(x2 + y) + y2

Mathematics
2 answers:
kakasveta [241]4 years ago
8 0
5 (3*2+6) +6*2

Do parenthesis first

5 ( 12 ) + 6 * 2

multiply from left to right

60 + 12

add

72
cupoosta [38]4 years ago
8 0
5(3x2 + 6) + 6x2
5(6 + 6) + 6x2
5 x 12 + 6x2
60 + 12
72
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Given that weekly demand curve of a local wine producer is p = 50 − 0.1q, and that
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Z(p) = -10p² + 600p - 6500

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Demand curve <em>p</em> = 50 - 0.1 <em>q</em>

Total cost function <em>C</em>(<em>q</em>) = 1500 + 10q

where q is the number of bottles produced each day and p is the selling prices per bottle.

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o.1 <em>q = </em>50 <em>- p</em>

<em>q = </em>500 - 10<em>p</em>

Revenue = price × quantity =<em> p × q</em>

= <em>p</em> ( 500 - 10<em>p</em>)

= 500<em> p</em> - 10<em>p²</em>

Profit = total revenue - total cost

Let Profit be Z since profit is function of price, therefore

<em>Z(p) = pq - C(q)</em>

<em>Z</em> (p)=  500<em> p</em> - 10<em>p</em>² - (1500 + 10<em>q</em>)

Substituting the value of q in above expression,

<em>Z(p) </em>= 500 <em>p</em> - 10<em>p</em>² - ( 1500 + 10 (500 - 10<em>p</em>))

<em>Z(p)</em> = 500<em>p</em> -10<em>p</em>² - 1500 -5000 + 100<em>p</em>

<em>Z(p)</em> = -10<em>p</em>² + 600<em>p</em> - 6500

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