Carrie is analyzing the difference between what a customer is willing to pay for a product/service and how much it costs the firm to offer the product/service. Cassie is examining the difference between what the firm ultimately charges for the product/service and how much it costs the firm to offer the product/service. Carrie is analyzing ___, and Cassie is analyzing ___.

When employing the core learning system, reading text books and attending class are important ways to knowledge.

Which is the best conclusion that can be drawn regarding the status of african-americans in the south in the late 1800s? a) african-americans made tremendous political, social, and economic advancements during the reconstruction era. b) passage of the 13th, 14th, and 15th amendments to the u.s. constitution guaranteed equal status and rights for all african-americans. c) the reconstruction policies enacted by the federal government were highly effective in african-american citizens transition to life after slavery. d) although african-americans had equal rights under federal law they were still economically, politically, and socially inferior to whites in the south during the reconstruction era.

What does one prolonged blast and one short blast mean?