Use a variable for the unknown number so it would be 77-2x also if you don't know a number and a variable together means to multiply them
Answer:
60 is the area
Step-by-step explanation:
you just mult 12x5
Answer:
In 39 years time, the population doubled.
Since the two points have the same x value, this means the it is a vertical line. Vertical lines do not have a slope. This means that the answer is undefined
D. comes first as it has the most significant figures. Hope this helps!!