It wouldn't let me post the answer. See images for the answer and explanation
Answer:

Step-by-step explanation:

Answer:
60
Step-by-step explanation:
I times 20 x 3 = 60 because each days us 3 and I use my fingers to count
Answer:
I believe that it is a irrational number.
Step-by-step explanation:
An irrational number is a number that cannot be written as a fraction with a num and denom that aren't equal to 0. These cannot be expressed as repeating decimals. -pi has all these traits, therefore it's irrational.
First you need to find the middle number, wich is 75. Since there is no $75, I would go with $80.