its the first option.
tiles of X and tiles of 1 are different
3 tiles of "X" = 3X
3 tiles of " 1 " = 3
option 3 does not mean 3X, it just means 3X + 3
Answer:
Transitive property
But it looks like substitution.
Step-by-step explanation:
The correct answer is C.) 100 feet
(Feet per minute) x (number of minutes)
20x5 = 100