Well I personally think and this is just my opinion or should I say answer but I think it is 16
Answer:
D
Step-by-step explanation:
The other ones don't make sense. The answer is 3.5x+x=9.90
Y=x-7 this is because you subtracted the x to both sides. Since y is a negative, you divide by -1 causing the -x to turn positive and the positive seven to be negative seven.
Answer:
I am not sure either
Step-by-step explanation:
Three diagonals can be drawn in a hexagon mmyyy dude.