Can you me in less than 10 minutes plz simplify 5^-8* 5^4

Well your answer is 5^-8=0.00000256 * 5^4=0.0016, so your answer is 0.0016. Basically, what you do is 5x(-8) get your answer, then do 5x4, get your anser and then multiply both answer. And boom, you solved it!

                                                     ~Hope this helps, Journeyxo

The coordinates of point a right now is (-3,-1) you have to multiply these coordinates by a factor of 2 to get (-6,-2)