Answer: BAHAHAHAHHA I ACTAULLY KNOW IT IT IS K=4
Equations : Tiger Algebra gives you not only the answers, but also the complete step by step ... 5 x 2+5 x −5=0 ... 5x^2+5x-5=0 ... Parabola, Finding the Vertex: ... Root 2 at {x,y} = { 0.62, 0.00} ...
To solve this problem you must apply the proccedure shown below:
1. You must apply the following formula:

Where
is the future value,
is the present value,
is the interest rate and
is the time in years.
2. You have that the bank will double your money in
years. Therefore:

3. Substitute values into the formula and solve for
, as following:

4. By applying natural logarithm, you have:

%
The answer is:
%
Answer:
40+11q
Step-by-step explanation:
5x+qy when x=8, y=11
5(8)+q(11)=40+11q