Answer:
4 gallons
Step-by-step explanation: for each gallon she used one
The median is the one in the middle. Sorting the data gives
$1.61, $1.75, $1.79, $1.84, $1.96, $2.09, $2.11
Seven data points and the fourth one is 1.84.
Answer: $1.84
Answer:
Both are negative
Step-by-step explanation:
If multiplying= It will always be negative
If dividing= It will also always be negative
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 