Algebra: Substitution with Given Numbers

1. If $n=6$, what is $6m(-9-n)$ in terms of $m$?

(A) $-60m$

(B) $-18m$

(C) $18m$

(D) $-90m$

(E) $90m$

2.  If $y+z=12$ and $y=-4$, then $\dfrac{z}{-2}=$

(A) 16

(B) -8

(C) -16

(D) 32

(E) -32

3. If $g=9$ and $h=-4$, what is the value of $\dfrac{1}{3}g+4h$?

(A) -19

(B) -13

(C) 19

(D) -14

(E) 13

4. If $x+y=-6.2$ and $x=-3.5$, then $-2y =$