Answer:
4(-7)
Step-by-step explanation:
I would say the answer is b, because it is a rhombus gape and all sides are congruent and there are 4 sides
First add 5 to 16, so -3x=21
then divide by -3, so the answer is
x= -7
A graphing calculator shows the x-intercepts of the expression on the left to be -1, 4, 7.
The real solutions to the cubic equation are x ∈ {-1, 4, 7}.