For the first one (10C4) it is 5040 and the second one (6P4) is 360. Hope that gives you a boost on answering! :D (sorry for the pink lighting) XD
PS. "10! = 1x2x3x4x5x6x7x8x9x10 or 10x9x8x7x6x5x4x3x2x1" "6!= 1x2x3x4x5x6 or 6x5x4x3x2x1"
15 x 3= 45 so 3 hours is the answer
Answer:

Step-by-step explanation:
Given

= -
× -
= 
= 
She has 5 ounces of toppings.
The reasoning is you first do 5-2.75 because you must subtract the basic sandwich from the total cost. Then, you must divided 2.25/0.45 because that is the cost of the remaining toppings.
Hey! I have found that the answer is:
Answer: 12/17
I am from k12 school :)