Hello! How can I solve this with Desmos?

Is studying for the SAT enough for the PSAT? Is there anything specific I should focus on the PSAT? Are there any major differences?

I got a 730 on Aniko Reading and 790 on whiz.study Math. 1520 superscore, but whiz.study felt significantly easier than Aniko math sections. Is this normal?

I just took the June SAT and my friend introduced me to this website. I checked through it and I got about 8-9 answers wrong and just might score 1430-1450. Anyone?

New app to track the Credits and rewards. Start using it tomorrow! Will send everyone's linking password in the next hour! There PROBABLY will be some bugs. Let me know if you see anything, so I can fix it! Here is the app.