The 3rd selection is appropriate.
.. 5b +1 = a = 3b +5
by the transitive property of equality,
.. 5b +1 = 3b +5
-3•-4=12, and -3+-4=-7.
this will turn into
(x-3)(x-4)
set them up to equal zero
x-3=0, x-4=0
solve
x=3, x=4
(a)
148,000,000,000,000,000,000,000
Answer:

Step-by-step explanation:
Factor the equation
using formula for difference of the cubes:

then

1. The equation
has real solution 
2. The equation
has negative discriminant
then it has two complex solutions

Answer:4=8feet 8=16 feetso in that case it would be 8 by 16
Step-by-step explanation: