A number is at least 45

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.

Terri makes a quilt using three sizes of fabric squares the side lenght of each fabric square is the square root of the area

Ineeeeed this is due tomorrow and i dont know the answer can you find all the exponents