October 2025 ACT Math Form J08-5 Hardest Questions

This video features full solutions & explanations to the 5 hardest/trickiest questions on the October 2025 ACT Math section Form J08: #21, 27, 28, 34, 39. Unlike some other explanation videos, my video shows multiple methods to solve problems including using Desmos. The reason I am only showing 5 problems in this video is because my previous videos, which showed solutions to the entire test, were removed due to a copyright claim.

0:00 Intro
0:23 Background Info
1:25 Background Info Part 2
2:05 Problem 21-Shaded Area: Circle in Square
5:45 Problem 27-Word Problem with Volume of Cone & Unit Conversion
9:35 Problem 28-Pascal’s Triangle or Expansion of a Polynomial
12:30 Problem 34-Line Segment Through Midpoints of Sides of a Triangle
15:53 Problem 39-Advanced Percentage Problem
23:09 Conclusion

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ACT Resources
Improve Your ACT Math Score Course
Udemy: https://www.udemy.com/course/improveyouractmathscore/?referralCode=32A38577C9B06A84FD05
Teachable: https://improveyouractmathscore.teachable.com/
Improve Your ACT Math Score Video Playlist - https://www.youtube.com/playlist?list=PLREMg1hjwo3yZ-DwXwC9dpiCeFxmwRESq
Ultimate Desmos Guide to ACT Math Playlist - https://www.youtube.com/playlist?list=PLREMg1hjwo3y9kBEyFvE7lGJCfCweplI2
ACT Desmos Operations Reference Sheet - https://www.dropbox.com/scl/fi/6kkqzl4yuj68rp9350p7a/ACT-DESMOS-Calculator-Functions-Updated.pdf?rlkey=4kh622fh5updscqndaa2wtehl&st=cst2qpkp&dl=0
Ultimate Desmos Guide Practice Problems (ALL) - https://www.dropbox.com/scl/fi/qitneoss1kd6ddv183t44/DESMOS-Video-Example-Problems-ACT.pdf?rlkey=56hf29q6v9sqk4w9j1j67b4r9&st=4c388ce2&dl=0
ACT Math Study Playlist - https://www.youtube.com/playlist?list=PLREMg1hjwo3xzAa0_MRyP5YHm5hWz8u2S
ACT Math Official Test Solutions & Explanations Playlist – https://www.youtube.com/playlist?list=PLREMg1hjwo3yWgQRiBBEOR10xenOBFT_3
ACT Math Formulas to Know (PDF) - https://www.dropbox.com/scl/fi/650dsepfyaoebtc6ty81g/ACT-Math-Formulas-to-Know-with-contact-info.pdf?rlkey=s7g7ke999ig7jtvrpnqrkwel0&st=n8bagelo&dl=0
ACT Math TI-84 Plus Calculator Operations Worksheet (PDF) – https://www.dropbox.com/scl/fi/x5bae9dbcrf3s4da4pe7k/SAT-ACT-TI-84-Calculator-Functions.pdf?rlkey=7rtjhht7kft7n5wnhw3k71zu5&st=ok3ivxzx&dl=0
ACT Math Practice Questions (official website) – https://www.act.org/content/act/en/products-and-services/the-act/test-preparation/free-act-test-prep/act-online-test-sample-questions.html
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SAT Resources

Ultimate Desmos Guide to Digital SAT Math Playlist - https://www.youtube.com/playlist?list=PLREMg1hjwo3yeLHVxUN7ccSKlNzBUmIrY
Digital SAT Math Bluebook & Linear Paper Practice Test Solutions & Explanations Playlist - https://www.youtube.com/playlist?list=PLREMg1hjwo3xsYVPbzUyqdzqRf1Wk696-
Digital SAT Math Official Test Solutions & Explanations Playlist - https://www.youtube.com/playlist?list=PLREMg1hjwo3xX69NYISqPXBPDtEMtPcni
SAT Math Study Playlist - https://www.youtube.com/playlist?list=PLREMg1hjwo3zCr9tGvRvMleCbgh6BsqQG
ACT/SAT Calculator Hacks Playlist - https://www.youtube.com/playlist?list=PLREMg1hjwo3whznu8NCsToRJHnhx_bpc4

SAT Math Formulas to Know Worksheet - https://www.dropbox.com/scl/fi/h6jsfxh0ujxf7y8r42yl1/SAT-Math-Formulas-to-Know-with-contact-info-current.pdf?rlkey=mlc5thsn2zz0p3nsyj0nz7l5b&st=skfvzlz4&dl=0
SAT Desmos Operations Reference Sheet - https://www.dropbox.com/scl/fi/hnfflmy5iigmae46nzg34/SAT-DESMOS-Calculator-Functions-Updated.pdf?rlkey=oruihyqii3mzjtny7pge762sc&st=8wpm0ndf&dl=0
TI-84 Plus Calculator Instructions - https://www.dropbox.com/scl/fi/x5bae9dbcrf3s4da4pe7k/SAT-ACT-TI-84-Calculator-Functions.pdf?rlkey=7rtjhht7kft7n5wnhw3k71zu5&st=ok3ivxzx&dl=0
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Website – https://morgantownmathtutor.wordpress.com
Facebook – https://www.facebook.com/jwmathtutoring
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Reddit - https://www.reddit.com/user/jwmathtutoring
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Music courtesy of moe.
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Видео October 2025 ACT Math Form J08-5 Hardest Questions канала JW Math Tutoring