Hi! Recently I’ve missed 2 classes and had 8 homeowkr questions I couldn’t quite

Hi! Recently I’ve missed 2 classes and had 8 homeowkr questions I couldn’t quite solve. I need help on solving them or just even starting the problem.
1) In the diagram below, if $AD=30$, what is $BC$?
2) If $ST = 2,$ $QS = 4,$ and $PT = 5,$ find $PQ.$
image: https://latex.artofproblemsolving.com/a/7/e/a7eab5e61bab7da8c73b574bd4b0aef92559ee50.png
3) Find the Area of the Triangle
Image: https://latex.artofproblemsolving.com/5/9/d/59d222805a6bec04663b50d269dbc9bf8562488b.png
——————————————————————————————————————————————————-
1) Given that $AB+CD = 20,$ what is $BD?$
Image: https://latex.artofproblemsolving.com/c/e/a/cea4f110ff0546a5f823da68bc7f20a2cb27d19b.png
2) Find QS
Image: https://latex.artofproblemsolving.com/1/1/d/11dc66b67019b54254f79d4b2604d2c5f497ff19.png
3) Find the Area of the rectangle 
Image: https://latex.artofproblemsolving.com/e/a/9/ea93148bb0fba5a0441b2354fd0f981da4d4a6d6.png
4) ll five rectangles in the diagram are congruent. If the short side of each rectangle is 1 then find the long side of each rectangle
Image: https://latex.artofproblemsolving.com/4/7/3/473a88995b68257533aac77f37cd60576f455785.png
5)Find AC
Image: https://latex.artofproblemsolving.com/9/f/6/9f68656be38cdc0b51645684ad79072e1e3ef802.png
If you can help with even just a few problems, that would really help me after missing classes from sports. Thanks!!