The height of a building is proportional of the number of floors the figure shows the height of the building with 9 floors a reasoning write the ratio of height of the building to the number of floors then find the unit rate and explain what it means in the situation

The ratio of the height of the building to the number of floors and the unit rate can be expressed as :

Given the Parameters :

Ratio of Height to the number of floors :

The unit rate :

Therefore, 1 floor of the building is 15 feets high

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Meaning: Each floor of the buiding has a height of 15 feet.

Step-by-step explanation:

By definition, the ratios are used to compare two or more things or quantities.

In this case you must write the ratio of height of the building to the number of floors it has.

You can observe in the figure that the building has a height of 135 feet, and, since it has 9 floors, you can write the following ratio:

Therefore, dividing the numerator by the denominator, you get that the unit rate is:

This means that each floor of the buiding has a height of 15 feet.

the answer is b.)

< 1=< 2

option 3 . (5x + 1) - (-10x + 6)

step-by-step explanation:

option 1 :

(4x + 3) + (-9x + 4)

or 4x+3 -9x + 4

or -5x + 7

option 2

(x - 2) - (6x - 9)

or x-2-6x + 9

or -5x + 7

option 3

(5x+ + 6)

or 5x + 1 + 10x -6

or 15x -5

option 4

-4x+2x+7-3x

-7x + 2x + 7

-5x + 7

hence only option 3 did   not satisfy the given simplify expression.