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Ulleksa [173]
3 years ago
13

certain electronics manufacturer found that the marginal cost C to produce x DVD/Blu- ray players can be found using the equatio

n C = 0.03 x 2 − 8 x + 700 . If the marginal cost were $522, how many DVD/Blu-ray players were produced?
Mathematics
1 answer:
AleksAgata [21]3 years ago
8 0

Answer:

242.

Step-by-step explanation:

C = 0.03 x 2 − 8 x + 700

When the marginal cost = $522 we have:

522 = 0.03 x 2 − 8 x + 700

0.03x^2 - 8x + 700 - 522 = 0

0.03x^2 - 8x + 178 = 0

Using the quadratic formula:

x =  [ -(-8) +/- sqrt( 64 - 4 * 0.03 * 178)] / 0.06

= 8 +/- sqrt42.64 / 0.06

= 242  players.

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a birthday cake at the bakery was $30 originally. During a sale, a discount of 28% was given. A further 15% discount was given t
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3 years ago
Use the quadratic model y = −4x2 − 3x + 4 to predict y if x equals 5.
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