Anew office building in town has x2 + 4 floors. each floor is 3x2 – 5 feet high. which expression shows the total height of this office building?

a. 3x4 – 20 feet
b. 3x4 + 7x2 – 20 feet
c.4x2 – 1 feet
d. 4x4 + 6x2 – 20 feet

OPTION B.

Step-by-step explanation:

You know that:

Therefore, you must multiply by to obtain the expression that shows the total height  in feet of this office building.

Then:

Add the like terms:

Therefore, the answer is the option B.

answer: -2+√x,-2-√x

i hope this , i don't know if you're looking for a pair or not.

a)(x-2)^2+(y-1)^2=9

step-by-step explanation:

(picture explains)