Jessica is playing a game. She has 50 tens. Her brother has 9 hundreds. How much more does her brother have?

400

Step-by-step explanation:

9 hundreds is equal to the number 900.

50 tens is equal to the number 500.

900 - 500 is 400.

The answer is 400. Hope this helps!

if x = 1, then the answer is 3.5

check above link.

graphically?   well, you graph them both, the solutions is where they both intersect each other, since there are two solutions, meaning they will meet twice, or namely the linear will run into the quadratic curve twice, and where they meet, those x,y coordinates are the solutions to the system.