Answer:

Step-by-step explanation:
We are given the two functions:

And we want to find:

This is equivalent to:

By substitution:

Rearranging yields:

Combine like terms:

Hence:

You divide 18 with 3 and is going to equal 6 so that should be your constant proportionality
(4 feet wide), 12 feet in length. 4*3=12 4*12=48
Answer:
54 students
Step-by-step explanation:
42 / 7 = 6
9 x 6 = 54
42 : 54 = 7 : 9
D: We solve this in exactly the same way in which we solved the previous area problem. Side length is s, area is s^2. Here, side length is 5 in; area is 25 in^2.
the problem does say, however, not to include units in your answer. Thus, just write "25."