What fraction is equivalent to 2.68

Part a: select all of the ordered pairs that are located on the graph of the equation. part b: does the graph of the equation represent a function? select all correct answers for part a and one answer for part b.

The experience c-0.25c can be used to find the cost of an item on sale for 25% off which expression beloit equivalent to c-0.25c

Compute the standard deviation of the following set of data to the nearest whole number. 10, 10, 15, 20, 25