What is the fraction twelve twentieths in its simplest form

Using the graph below, select all statements that are true. a. f(0.6)=0 b. f(-3.2)=-3 c. f(5.1)=5 d. this is the graph of the greatest integer function. e. this graph is one-to-one.

Prove that quadrilateral is a rhombus.

Which inequality statement describes the two numbers on a number line? "? 7 and a number 5 units to the right of ? 7"