Amber owns a skateboard shop. amber wants to buy one thousand eight hundred forty six skateboard wheels. skateboard wheels sell in sets of two. a set of two skateboard wheels cost five dollars and seventy-five cents. how much money does amber spend to buy one thousand eight hundred forty-six wheels/ amber puts four wheels on every skateboard. on how many skateboards can amber put four wheels. show all your mathematical thinking

Amber spends $5,307.25 and she can make 461 skateboards.
Divide 1846 by 2 and you get 923, you then multiply that by $5.75 and get $5,307.25. 
Then, you'll divide 1,845 by 4 and get 461.5. (she can only make 461 full skateboards.)

I believe the answer is: Prices for goods and services increased, and a dollar bought less than it previously had

In the 1970s, united states was experiencing a period of economic stagnation which later known as called the great inflation of the 1970s.

During this period, the number of unemployment skyrocketed and the value of our currency fall dramatically, which caused an increase in overall products and less amount of products it can obtain with previously same amount.