Pls answer asap.. picture of questions listed thx

Here's for part a: 8.43 x 10^5   3.19 x 10^8

I'm not really sure for part b.

I hope this answer for part a helped...

where is the triangle?

a reflection across the x-axis , followed by the by a reflection across the y-axis , and then a scale dilation of 0.5 .