Solve $0 = 64 x ^ { 2 } + 80 x + 15$

question 67

Multiple Choice

Solve $0 = 64 x ^ { 2 } + 80 x + 15$ using the quadratic formula.

• A) \(x = \frac { 5 \pm \sqrt { 10 } } { 8 }\)
• B) \(x = \frac { \pm \sqrt { 10 } } { 8 }\)
• C) \(x = \frac { - 8 \pm \sqrt { 10 } } { 5 }\)
• D) \(x = \frac { - 5 \pm \sqrt { 10 } } { 8 }\)
• E) \(x = \frac { 5 } { 8 }\)

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Definitions:

AVC

Average Variable Cost; the total variable cost divided by the quantity of output produced.

MC

MC often stands for Marginal Cost, which is the cost of producing one additional unit of a good.

ATC

Average Total Cost; the total cost of production divided by the quantity of output produced.

AVC

Average Variable Cost, which is the total variable cost divided by the quantity of output produced. It represents the variable cost per unit of output.