<span>This is the term used to describe economic systems in which the basic economic questions are answered based on a socially, pre-established way.</span>
The answer to the question is D
Answer:
9 buses will be needed but 9 bus will be empty there will be very small amount of fans in the 9th bus.
Answer:
Joshua solved 7 math problems and tread 14 pages.
Step-by-step explanation:
Let x be the number of math problems Joshua solved. The number of pages Joshua read is twice the number of math problems he solved, then 2x is the number of pages Joshua read.
Joshua can solve each math problem in 2.5 minutes, then x math problems he solves in 2.5x minutes.
Joshua can read each page in 3 minutes, then 2x pages he reads in
minutes.
It took him 59.5 minutes to complete all of his homework, so

Solve this equation:

Joshua solved 7 math problems and tread 14 pages.
2.5/5 = x/8, cross multiply and solve for x