44. C Each paragraph opens with a description of Ochoa’s achievements except for the third
paragraph, which details her early years before becoming a renowned scientist. Therefore,
the third paragraph should be first, and only (C) shows this, making it the correct answer.
Section 3: Math (No Calculator)
1. B Subtract the one-time set-up charge from David’s budget first: 150 – 35 = 115. Calculate
the number of people David can invite as follows: 115 ÷ 15 = 7. 6 . David can invite at most
7 people (including himself), so p ≤ 7. In (A), 15p ≤ 185, so p ≤ 12. 3 or p ≤ 12.3.
Eliminate (A). Solve for p in (B) as follows: add 15p to both sides to get 15p + 35 ≤ 150,
so 15p ≤ 115 and p ≤ 7. 6 . The correct answer is (B).
2. C Whenever there are variables in the question and in the answer choices, think Plugging In.
Let d = 2. On the first day after Monday, 5 × 3 = 15 people will be infected. On the second
day after Monday, 15 × 3 = 45 people will be infected. Therefore, when d = 2, the result is
- Plug 2 in for d in the answer choices to see which answer equals the target number of
- Choice (A) becomes 5 × 3(2^2 ) = 5 × 12 = 60. This does not match the target number, so
eliminate (A). Choice (B) becomes 5 × 2^3 = 40. Eliminate (B). Choice (C) becomes 5 × 3^2
= 45. Keep (C), but check the remaining choice just in case. Choice (D) becomes 5 × 9(5) =
- Eliminate (D) and choose (C).
3. A Whenever there are variables in the question, think Plugging In. The answers refer to what
happens when the temperature, x, increases, so plug in more than one value of x. Plug in x =
1 into the equation to get y = –3.65(1) + 915 = –3.65 + 915 = 911.35. Next plug in x = 2 to
get y = –3.65(2) + 915 = –7.3 + 915 = 907.7. As average daily temperature, x, increased,
the number of units sold, y, decreased. Therefore, the correct answer is (A).
4. B Plugging In could work on this one, but calculators aren’t permitted. Since the equation is
fairly simple, solving may be a better approach. Multiply both sides of the equation by r^2 to
get Fr^2 = GMm. Divide both sides of the equation by Mm to get = G. The correct
answer is (B).
5. D Taking a number to the power is the same as taking the cube root of the number.
Therefore, . The correct answer is (D). A shortcut is to just raise the
coefficient to the power, and then use POE. Since only one answer starts with , that one
must be correct. Another approach is to plug in a number for s and let the calculator do the
hard work, though that would not help in this section because calculator use is not
permitted.
6. C Sketch a picture and write the formulas for arc length and area: s = rθ, A = πr^2 . Start by
