SAT Subject Test Mathematics Level 1

36 .

Figure  4

In  the segment shown   in  Figure  4,  the ratio   of  the lengths of

to

is  5:8.    If  x   represents  AB, what    is  the midpoint    of

in  terms   of  x?

(A) 4 x

(B)

(C)

(D)

(E)

37 . Let be defined as a b =

a^2     +   ba  −   16b ÷   a.

What    is  the value   of  8 3?