What is the advantage to spending less money than is earned? a) you will have lower bills. b) you never have to worry about money. c) you can save money for future purposes. d) you have to make no spending sacrifices.

Spending less money than earned, means there is some extra, or surplus, money. In other words, you can save money for future purposes. It could be anything from unexpected emergencies to something special one wants to buy when they have enough money.

the consumer demand because the members have to be aware if people are going to buy what they want to sell in this case either energy drinks or a car wash.

the correct answer is the following is a list of inventions made in the medieval islamic world, especially during the "islamic golden age" (8th to 13th centuries),[1][2] as well as the late medieval period, especially in the emirate of granada and the ottoman empire.

science and technology in the islamic world adopted and preserved knowledge and technologies from contemporary and earlier civilizations, including persia, india, china, and greece-roman antiquity, while making a number of improvements and innovations.