Answer:
Option C. 10.5(12 + x) square feet
Option E. (126 + 10.5x) square feet
Step-by-step explanation:
step 1
Find the area of the original living room
we know that
The area of the original living room is equal to

we have

substitute

step 2
Find the new area of the living room
The length of the room is being expanded by x feet
so
we have

The new area is

The expanded form of the expression is
Apply distributive property

Answer:
The correct option is A.
The following information should be considered:
The graph of the second equation should be the same to the first equation graph.
So here each and every solution of the first equation should be the solution to the second equation because each and every point is similar.
3 divided by 1/2 would be 6.
Answer: x=3
Step-by-step explanation:
<u> 1 </u>(x-15)+2x=16
3
<u> 1 </u>x-15+2x=16
3
<u>x-45+2x=16</u>
3
x-15+6x=16
7x=15+16
x=<u> 21 </u>
7
x=3
Example answers:
1) -8x + 66
2) -2(5x+10) -2(-3x+8)