Step-by-step explanation:
Total numbers of pizza toppings = 12
Number of three topping pizzas can be ordered are:

where = n = number of elements
k = number of elements choosen
n= 12 , k = 3

We calculated the number of permutations. We made this choice because in permutation order of element matters but in combination its not.
Answer:
1.3, 2 1/3, 1.34 is the order from least to greatest
Out of what? Nothing is shown. :(
Lynn age: 7x+2. That's if you wanted an equation.
The question would help if there were a picture of the problem
however I can say that it should always add up to 180 and subtracted by the interior sum