Answer: 2 bookcases.
Step-by-step explanation:
Let be "x" the number of bookcases that the custodian will be able to repaint completly with 5 gallons of paint.
According to the data given, the custodian needs 2 gallons of paint to repaint one bookcase. Since all the bookcases are equal, you can set up the following proportion:

Now you must solve for "x" in order to find its value:

Notice that the custodian will be able to repaint 2 bookcases completely, then you can say that:

Answer:
c. 0,100
Step-by-step explanation:
Hi I don’t understand what you mean by the 10-5 and those others but if u mean order the numbers 8.1,6.5,5.2 from least to greatest then I can do that it’s 5.2, 6.5, 8.1 hope that helped