For each integer ;; greater than I. the sum of the first a positive integers is given by the formula shown.
If the average (arithmetic mean) of the first // positive integers is k. what is the sum of the first n positive integers in terms of k ?
A)

B)

C)

D)

E)

• A. Option B
• B. Option A
• C. Option D
• D. Option C
• E. Option E

• A. Quantity A is greater.
• B. The two quantities are equal.
• C. The relationship cannot be determined from the information given.
• D. Quantity B is greater.

One reason researchers have long believed that Mars never enjoyed an extensive period of warm and wet climate is that much of the surface not covered by wind-borne dust appears to be composed of unweathered material. If water flowed for an extended period, researchers reasoned, it should have altered and weathered the volcanic minerals, creating clays or other oxidized, hydrated phases (minerals that incorporate water molecules in their crystal structure).
It turns out. though, that the scientists were not looking closely enough. New high-resolution mapping data and close-up surface studies have revealed clays and other hydrated minerals in many regions The clay deposits are scattered all over, in ancient volcanic surfaces and heavily cratered highland regions, some of which have apparently been exposed by erosion only recently.
Consider each of the choices separately and select all that apply.
The passage indicates which of the following about the clay deposits an Mars?

• A. They are not the only hydrated minerals on Mars.
• B. They have only recently been detected.
• C. They are widely distributed.

The danger often facing authors of satirical works is that if the audience is not (i)_________the joke, the piece may end up (ii)_________the behavior it was trying to (iii)_________.

• A. reinforcing
• B. discerning enough to get
• C. conceal
• D. elucidating
• E. willing to laugh at
• F. ridicule
• G. depicting
• H. already frustrated by
• I. support