SAT Subject Test Mathematics Level 2

options.

n^18    =   n6+12   =   n^6     ×   n^12

Since   3n  =   n^6 ,   you can substitute  in  the equation:

n^18    =   n^6     ×   n^12    =   3n  ×   n^12    =   3nn^12

22 . C
Radicals of negative numbers are undefined, so (4 − x)^2 − 5 ≥ 0.

To  find    the domain  of  the function,   solve   the inequality  for x.

(4  −   x)^2    ≥   5

Since

or

So,

23 . D

Since   one solution    is  x = 6,  let’s   substitute  6   for x   in  the equation    x^2     −   22x +   d   =   0.  Then     62     −

22(6)   +   d   =   0,  36  −   132 +   d   =   0,  −96 +   d   =   0,  and d   =    96.