The repeating decimal 0.2 is expressed as 2/9.
It states that the square of the hypotenuse is equal to the sum of the squares of the other two sides.
Fist find the slope. The equation is m=y2-y1/x2-x1. Then use slope point form and select a point. Then use the equation y-y1=m(x-x1). Simplify and isolate y.
Because she wants to be able to access her money she needs a high interest savings account that used compound interest that compounds as often as possible.
Hope that helps