Question

Fill in the blanks!

Jermaine parks in a parking garage 2 floors below the lobby of his hotel. He gets into an elevator and rides it up 9 floors to his room. What floor is Jermaine's room on?
(_) + 9 = 7
He was on the 7th floor.

Answer 1

To solve for the floor where Jermaine's room is located, we need to determine what number plus 9 equals 7.

Let's denote the number of the floor Jermaine is on before he rides the elevator as \( x \):
\[
x + 9 = 7
\]

Now we can solve for \( x \):
\[
x = 7 - 9
\]
\[
x = -2
\]

Since Jermaine is parked 2 floors below the lobby, he is on the -2nd floor (2 floors below the ground level).

Now, if Jermaine rides up 9 floors from the -2nd floor:
\[
-2 + 9 = 7
\]

This calculation confirms that Jermaine's room is indeed on the 7th floor.

So, the completed sentence would read:

Jermaine parks in a parking garage 2 floors below the lobby of his hotel. He gets into an elevator and rides it up 9 floors to his room. What floor is Jermaine's room on?
(-2) + 9 = 7
He was on the 7th floor.