Estimate the sum of 1,537 times 242 then find out the sum

How do you write something in scientific notation?

Which number is located at point a on the number line? a number line is shown from negative 10 to 10 with each interval mark on the number line representing one unit. point a is labeled one interval mark to the right of negative 5.

Solve 2x − 1 = 11 for x using the change of base formula log base b of y equals log y over log b.