A(n) ________ cost is one whose total amount changes in direct proportion to a change in volume

When scientists concentrate on quality control and the development of design specifications and improved production equipment, it is referred to as

A) basic R&D. B) product R&D. C) engineering R&D. D) life cycle R&D. E) R&D mix.

Alicia borrowed $8,500 at 6% ordinary interest for 180 days. After 40 days, she made a partial payment of $2,000. After another 70 days, Alicia made a second partial payment of $2,000. What is the final amount due on the loan? (Round to the nearest cent)

A) $4,755.00 B) $4,687.21 C) $4,500.50 D) $4,684.62