Problem

Average cost is \(C_\text{avg}(x)~=~C(x)/x\), where \(C(x)\) is total cost in dollars and \(x\) is the number of items. Interpret the numerator, denominator, quotient units, algebraic domain, and contextual domain.

Answer choices

Choose your path.

Preview only

Numerator C(x): total cost, dollars. Denominator x: item count. Quotient: average cost, dollars per item. Algebraic domain: x≠0. Context: positive whole-number x.

Numerator C(x): total cost, dollars. Denominator x: dollars. Quotient: average cost, dollars. Algebraic domain: x≠0. Context: positive whole-number x.

Numerator C(x): total cost, dollars. Denominator x: item count. Quotient: average cost, items per dollar. Algebraic domain: x≠0. Context: positive whole-number x.

Numerator C(x): total cost, dollars. Denominator x: item count. Quotient: average cost, dollars per item. Algebraic domain: all real x. Context: all real x.

The choices are visible. Checking your work and seeing which answer is correct happen inside Gozunta.

Average cost is \(C_\text{avg}(x)~=~C(x)/x\), where \(C(x)\) is total cost in dollars and \(x\) is the number of items. Interpret the numerator, denominator, quotient units, algebraic domain, and contextual domain.

Turn the preview into practice.

Gozunta lets you study this problem—and more than 10,000 others.