Answer:
There are two possibilities:
and 
and 
Step-by-step explanation:
Mathematically speaking, the statement is equivalent to this 2-variable non-linear system:


First,
is cleared in the first equation:

Now, the variable is substituted in the second one:

And some algebra is done in order to simplify the expression:


Roots are found by means of the General Equation for Second-Order Polynomials:
and 
There are two different values for
:






There are two possibilities:
and 
and 
Answer: B
Step-by-step explanation:

Every real is solution of the equation .
Answer:
1331 feet3
Step-by-step explanation:
I have to say b. Hope this helps!!! Brainleist Please I only need two more
Answer:
$780
Step-by-step explanation:
15x60 = 900 900 - 120 = $780