D. Because you're multiplying 3 by a number which is what the variable represents (n), then you're just adding 7 to that which equals 19 all together. It all translates to 3n+7=19.
Step-by-step explanation:
If x=3, y=7 when x+y=z
z=3+7
z=10
Answer:
-2
Step-by-step explanation:
3|x-7|<= 27
then |x-7|<=27/3=9
hence, -9<=x-7<=9
therefore, -2<=x<=16
Answer:
5
Step-by-step explanation:
multiplied by 
which makes: 
simplify: 5
Answer: 2/8, 0.432, 87%
Step-by-step explanation:
