Answer:
Step-by-step explanation:
They are closed under addition, subtraction and multiplication.
Answer:
3.51
Step-by-step explanation:
i took 9.2 ÷ 4.14 to find how much they charged per oz. then i took 7.8 and multipled it by 45 cents per oz.
Answer:
9%
Step-by-step explanation:
We can start by changing this number to a fraction.

We know that 100 is a whole percentage
Therfore, we would get 9%