{"id":"tsi-free","timeLimitSec":420,"questions":[{"id":"tf-01","section":"math","q":"A jacket costs $80. It is on sale for 15% off. What is the sale price?","options":["$92.00","$72.00","$68.00","$65.00"],"answer":2,"explain":"15% of $80 is 0.15 × 80 = $12. The sale price is $80 − $12 = $68.00."},{"id":"tf-02","section":"math","q":"If f(x) = 2x² − 3x + 1, what is f(−2)?","options":["15","11","3","−1"],"answer":0,"explain":"Substitute −2: 2(−2)² − 3(−2) + 1 = 2(4) + 6 + 1 = 8 + 6 + 1 = 15. Squaring −2 gives +4."},{"id":"tf-03","section":"reading","q":"Passage: \"When the city of Laredo planted shade trees along two downtown streets, shop owners worried that the trees would hide their signs. Two summers later, the same owners reported that more people walked those streets in the afternoon, when the sidewalks had once been too hot to use. Several asked the city to plant trees on the next block as well.\"\n\nWhich statement best expresses the main idea of the passage?","options":["The city should stop planting trees until shop owners agree.","Shop owners who first doubted the shade trees came to see them as helpful.","Shop signs are harder to read when trees are planted nearby.","Laredo has the hottest summer afternoons of any Texas city."],"answer":1,"explain":"The passage moves from the owners' worry to their later request for more trees. The other choices are either not stated (hottest city) or describe only the early worry."},{"id":"tf-04","section":"reading","q":"Passage: \"Ana had practiced the speech every night for a week. Still, when her name was called, she folded the note cards in half, then in half again, until they were a small, stiff square in her palm.\"\n\nWhat does the detail about the note cards most likely show about Ana?","options":["She is nervous about giving the speech.","She is angry that her name was called.","She has decided not to give the speech.","She no longer needs her notes at all."],"answer":0,"explain":"Folding and squeezing the cards is a nervous habit. Nothing shows she quit, felt angry or no longer needs the notes; she practiced because the speech matters to her."},{"id":"tf-05","section":"writing","q":"Choose the best way to complete the sentence.\n\n\"The members of the debate team ______ practicing every afternoon this week.\"","options":["was","has been","is","are"],"answer":3,"explain":"The subject is \"members\" (plural), not \"team,\" so the verb must be plural: \"are.\" Words in a prepositional phrase (\"of the debate team\") do not change the subject."}]}