Write 6.015x10^8 in standard form (with the commas)

Which graph shows a function with a range of all real numbers greater than or equal to -1

There are 1872 steps in a building that has 104 floors. each floor has the same number of steps. a second building has the same number of floors but 2 fewer steps between each floor. how many steps are there between each floor of the second building?

1/3x^2+2 what does the graph look like