Use an if the word following an indefinite article begins with a vowel sound

Custom Shoes Co. has gathered the following information concerning one model of shoe:

Variable manufacturing costs $40,000 Variable selling and administrative costs $20,000 Fixed manufacturing costs $160,000 Fixed selling and administrative costs $120,000 Investment $1,700,000 ROI 30% Planned production and sales 5,000 pairs What is the target selling price per pair of shoes? a) $170 b) $114 c) $142 d) $158

Most viewers move speedily through:

a. navigation pages b. content pages c. both of the above d. none of the above