If $2 x-3=10$, what is the value of $4 x$ ?
(A) 23
(B) 24
(C) 28
(D) 26
(E) 20
Since $2 x-3=10$, then $2 x=13$ and so $4 x=2(2 x)=2(13)=26$.

(We did not have to determine the value of $x$.)

ANSWER: (D)