Crystal has 81/100 of a dollar. what could be the coins crystal has?

An object in geometry with no width, length or height is a(n):

In a young single person's monthly budget, $150 is spent on food, $175 is spent on housing, and $175 is spend on other items. suppose you drew a circle graph to represent this information, what percent of the graph represents housing?

The function f(x) is shown in this graph the function g(x)=6x