Minus the 21 from the other side of the equation making it 7x=-21 then u divide the 7 from the x to the -21 resulting in x=-3
.0000914
Since it is negative you go behind the .
so you would go 5 spaces behind the point
It's B because the car gets older as the years of ownership go up; resulting in a negative correlation on a graph. Hope I helped :)
Your answer is B. 0.075 m
17: 900 because 3,000 + 900 + 40 +7 is 3,947 or 3,947-3,000-40-7= 900
