9u+5
9u represents 9 multiplied by a number.
+5 means 5 more than this product.
Hope this helps.
Answer: 1200
Step-by-step explanation:

The function is a constant. No matter the input the output will always be equal to 9.
Hope this helps.
r3t40
Answer:
the difference between the highest and lowest values in a set of numbers.
Step-by-step explanation: