A dilation has center at the origin. Which of the following is the image of the point 7/4, -5/2 for a scale factor of 1/7

Describe all the numbers that when rounded to the nearest thousand are 645,000

I'll give brainliest if you answer right : )

Nick and nora are married and have three children in college. they have an adjusted gross income of 47,400. if their standard deduction is 12,600 itemized deductions are 14,200 and they get an exemption of 4000 for each adult and each dependent what is their taxable income