anyone know the answers to these?

1. A test was carried out on a electrical circuit and the following resaults obtained:

4t1+t2=6

-3t1+5t2=0

the 1s and 2s are lower case dont know how to do it sorry!

solve analytically the above simultaneous equatios and check your answer by plotting their graphs on the same set of axes

2. the area of a rectangle is 25.2m2 (squared) and the width is 3.2 metres shorter than the length. calculate the dimentions of the rectangle.

3. solve by factorising the following equations:

x(squared)-6x+9=0

6x(squared)+x-15=0

if anyone can work these out or help me i would be much app cheers!