C. k+18

METHOD:SUBSTITUTE IN your own value for k . Just choose any number that is divisble by 2,3,6, and 9. Let's use 18.

Let's make k =18
Let n= 18
Now, since the quesiton asks for the 'next largest integer' it's best to start with A (k+2) and work towards E that way we are moving from smallest to largest, and you will see that C is the answer that works.
k+18=36

E) 20

METHOD:SUBSTITUTE IN your own value for x .

Let's make x =3; therefore y=5*3 = 15
Let x+4= 3+4 = 7; this makes y=5*7=35
35-15=20

C. n+3

METHOD: Substitute your own value for n .
Let n= 54.
n+3=57 which has a remainder of 2 when divided by 5.

Doing this problem by means of pure algebra is a major waste of test time.

C. 3

METHOD:SUBSTITUTE IN your own value for n . Just choose any number that will give you a remineder of 2 when divided by 7. For instance, let's make n =16
Let n= 16
5n=80 which has a remainder of 3 when divided by 7.

Doing this problem by means of pure algebra is a major waste of test time.

E. y is multiplied by 4

METHOD: SUBSTITUE IN your own values for x, y, and z, and you will see that if you double x and z the effect on y is that it is multplied by 4.

This makes sense since you're really multiplying this expression by (2³/2) = 8/2 = 4

TRAP: Answer A   is a trap; in fact, almost any answers except for the right one is an order of operations trap. Remember parentheses are first! Exponents second.

ETS difficulty level (4 of 5)

ANSWER: 5/4 or 1.25

Chose a value for x, compute the expressions with your value then compare to original value of x.

METHOD: SUBSTITE IN your own numbers for a and b

A)

METHOD: SUBSTITUE IN your own values for p,k,and n then with those those numbers solve the problem. Your answer should be the same as only one answer choice: A.