SAT Practice Quiz #2 (with Explanations)
Round 2 — these questions focus on the highest-frequency trap patterns. Try timed, then read the breakdowns.
15 min read · Educational guide
Section 1: Math (5 questions)
1. If 4a − 5b = 23 and b = −3, what is the value of a?
A) 1 B) 2 C) 3 D) 4
Substitute: 4a − 5(−3) = 23 → 4a + 15 = 23 → 4a = 8 → a = 2.
Answer: B
2. The expression (2x − 1)(x + 4) is equivalent to:
A) 2x² + 7x − 4 B) 2x² − 7x − 4 C) 2x² + 9x + 4 D) 2x² − 9x + 4
FOIL: 2x·x + 2x·4 + (−1)·x + (−1)·4 = 2x² + 8x − x − 4 = 2x² + 7x − 4.
Answer: A
3. A right triangle has legs of length 9 and 12. What is the length of the hypotenuse?
A) 13 B) 14 C) 15 D) 21
9² + 12² = 81 + 144 = 225. √225 = 15. (A 3-4-5 triple scaled by 3.)
Answer: C
4. The average (arithmetic mean) of 8 numbers is 15. What is their sum?
A) 23 B) 60 C) 105 D) 120
Sum = average × count = 15 × 8 = 120.
Answer: D
5. Which of the following is a solution to x² + x − 20 = 0?
A) −5 B) −2 C) 2 D) 5
Factor: (x + 5)(x − 4) = 0. Solutions x = −5 or x = 4. Only −5 appears.
Answer: A
Section 2: Reading and Writing (5 questions)
6. Choose the correctly punctuated sentence:
- A) The bakery sold out of croissants, therefore, the line dispersed quickly.
- B) The bakery sold out of croissants; therefore, the line dispersed quickly.
- C) The bakery sold out of croissants therefore, the line dispersed quickly.
- D) The bakery sold out of croissants; therefore the line dispersed quickly.
A conjunctive adverb ("therefore") connecting two independent clauses needs a semicolon before and a comma after.
Answer: B
7. Neither of the candidates ______ willing to debate publicly.
A) are B) is C) were being D) have been
"Neither" is singular. Singular verb: "is".
Answer: B
8. The author's tone in the passage is best described as ______.
Passage: "The prototype shows real promise, but until we see how it performs across a full winter season, any sweeping claims about its durability remain premature."
A) skeptical B) measured C) hostile D) celebratory
The author acknowledges genuine promise while urging caution about premature conclusions — neither dismissive nor enthusiastic. That's a measured tone.
Answer: B
9. Which choice best combines the two sentences while preserving meaning?
"The observatory was founded in 1887. It was the first in the region to track variable stars."
- A) The observatory was founded in 1887 it was the first in the region to track variable stars.
- B) Founded in 1887, the observatory was the first in the region to track variable stars.
- C) The observatory founded in 1887, was the first in the region, to track variable stars.
- D) The observatory, founded in 1887, and it was the first in the region to track variable stars.
B is concise, with a correctly attached participial phrase modifying "the observatory" and no comma errors.
Answer: B
10. Notes:
- Engineer Hiroshi Tanaka studied the wings of barn owls in Japan.
- The owls' serrated feather edges allow nearly silent flight.
- Tanaka's lab is designing quieter wind-turbine blades based on the feather structure.
The student wants to introduce the owls' role in inspiring new technology. Which sentence best accomplishes that goal?
- A) Hiroshi Tanaka is an engineer who works in Japan.
- B) Barn owls fly silently because of their serrated feather edges.
- C) Inspired by the serrated feather edges that let barn owls fly silently, Hiroshi Tanaka's lab is designing quieter wind-turbine blades.
- D) Wind turbines have become quieter in recent years.
C directly links the owls' adaptation to the new technology — exactly the introduction goal.
Answer: C
How to use these results
- Group your misses by topic, then drill that topic for a week.
- Re-take this quiz after one week — track the improvement.
Keep practicing
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