Which of these numbers are less than 8.1 × 10-8?

Which of the following would represent the sum of 3 consecutive integers if x is the first integer?

In the diagram, the measure of angle 9 is 85° which angle must also measure 85°?

which  best  describes the transformation from the graph of  f(x) =  x2  to the graph of  f(x) = (x  – 3)2  – 1?   left 3 units, down 1 unitleft 3 units, up 1 unitright 3 units, down 1 unit  right 3 units, up 1 unit