ElectricPavlov

800 + 48(519.63)    - 22500 = $3242.24 INTEREST

One          x  * y   *   1/x * 1/y=    x * 1/x   * y * 1/y   = ONE

Multiply  4x  times each of the terms in the second factor...then multiply 17 times each of the terms in the second factor...

    then collect like terms:

4x*3x + 4x * 2  + 17 * (3x) + 17 * 2

12x^2  +  59x + 34                                  Just be careful when there is a negative sign involved!

If you have  a sample, someone can show you how it is done,.......

A square of perimeter 4   has four sides = 1      1 x 1 = 1 unit^2

36 unit^2 / 1 unit^2 = 36 squares of 4 units perimeter.

1.6024 solved graphically.  I do not know how to do it algabraically. 

x *y = 2

x+y=7     y = 7-x    sub this into the first equation

x*(7-x) = 2

7x - x^2 -2 = 0

x^2-7x+2 = 0           Qudratic formula   a = 1 b = -7  c = 2       { 7+- sqrt ( 49-8)} /2      x = 3.5 +- sqrt(10.25)=   6.702   and  .2984

Wellll.... A triangle has THREE sides, so the average length would be  72/3

Bummer for you , Dude...... 

9:15 to 4: 11   is 45 min + 11 min + 6 hr =   6 hr 56 min     

6 hr 56 min * 1/2 = 3 hr 28 min

added to  9:15 =   12 :43 PM