Write each number in standard form.
2.5 . 105
7.8 . 10-5

When the ball has traveled a distance of

If the scale factor between two circles is 2x/5y what is the ratio of their areas?

Noel is hoping to make a profit (in $) on the school play and has determined the function describing the profit to be f(t) = 8t – 2654, where t is the number of tickets sold. what does the number 8 tell you?