Lina bought x rolls of film at $5.00 per roll and spent $25. how many rolls of film did lina buy? (must show work)

Step-by-step explanation:

If Lina supposedly bought 10 rolls, we would show it by the following equation,5*10=50, and since 25 is half of 50, we would have 5 as our solution.

25/5=5

5 rolls of films is our solution

constant of proportionality = 3 and the equation is c = 3p.

step-by-step explanation:

c = kp   where c = amount of caffeine in mg., p = oz of pepsi and k is the constant of proportionality.

substituting the values given:

24 = 8k

k = 3.

the same value of k will be obtained if we substitute the other given values.