When a polygon reflects across the y-axis, how do the coordinates of the points change?
The sign of the x-coordinate changes.
The sign of the y-coordinate changes.
The sign of both the x and y coordinates change.
The x and y coordinates are switched and the signs of both change.

UsaTestPrep its A

Step-by-step explanation:

he spend 5.1 minutes chatting with his friends

step-by-step explanation:

2/5+1/2=9/10

6/1-9/10=5 1/10

whatever you can spend with $11.53 or under.

step-by-step explanation:

20 - 8.47 = 11.53. take away the money he used for lunch from the starting amount of 20.