Its c I've done this before
Answer:
42 cups of flour
Step-by-step explanation:
12 is 4 times more than 3 (3 × 4 = 12), so we know that we need 4 times 10 1/2 (equal to 10.5) cups of flour.
All we need to do for this is do 10.5 × 4 = x and solve for x.
10.5 × 4 = 42 cups of flour
The equation that shows how the total number of cups of ice used, y, depends on the number of glasses filled, x, is 
<h3>
Linear function</h3>
Filling the cooler is an illustration of a linear function
A linear function is represented as: 
Where
- m represents the slope/rate
- b represents the y-intercept/the initial value
- x and y are the variables
<h3>The equations</h3>
By comparison, we have the following parameters
--- the amount of cups per ice
---- the initial amount of cup
So, the equation that represents this scenario is

Read more about linear functions at:
brainly.com/question/14323743