PLS HELP ASAP! I need help with the first one (first image) , and can someone check if the second one (second image) is right?

Using the side-splitter theorem, daniel wrote a proportion for the segment formed by luke segment de. what is ec?

The train station clock runs too fast and gains 5 minutes every 10 days. how many minutes and seconds will it have gained at the end of 9 days?

What are the solutions of the system? solve by graphing. y = -x^2 -6x - 7 y = 2