Is it possible to solve such question algebraically?

How to solve this is it possible to solve with desmos and faster?

I decided to take SAT Practice Test 11 to see if any of the problem sets had changed. I was honestly surprised that I did decent on the reading module because the problems on that module were very tricky compared to the other practice tests. There were a lot of older passages in the Reading and Writing module that confused the heck out of me. The only skill that I did terribly in was the Craft and Structure Problem. The math module was surprisingly easy and similar to the other practice tests. I plugged almost everything into Desmos, except for the trig problems and some data analysis questions. I did worse than on my last practice test, mainly because I was trying to use the strategies that were taught.

Forgot to post 1st mistake noticed neither so narrowed the choices into 2, but the tense was general fact so simple present well i picked present perfect ( have) idk why( idk im finding difficulties understanding what tense need, if someone got any tips or videos pls help) 2st mixed between essential and non essential info i picked (,) when the info was essential and there was ( that) which is considered always essential 3st subject-verb agreement plural/ singular mistake mixed the main subject with a plural noun between 2 commas 4st Can someone explain it, im not sure what is the rule used or why i got it wrong ( photo down) Thanks!

Is it possible to solve this with desmos? if yeah how, if no how.. thanks