Answer:
Step-by-step explanation:
Any time a number has a negative exponent that means that the resulting number will be a fraction (ex. 
). Therefore this number is the smallest number.
Anytime a number has an exponent of 0, it will always equal 1
40 = 0.5r
40/0.5 = r
80 = r
just divide the number in front of the r so that you can figure it out
Since the water bill costs $35, to split it into 2 equal payments, you would simply just half $35 which is $17.50.
It does not contain an equal sign. It cannot be solved for unless the value of the variable is given.
