Solve for the missing angle measure, show any work

Timed*** there are 8 rows and 8 columns, or 64 squares on a chessboard. suppose you place 1 penny on row 1 column a, 2 pennies on row 1 column b, 4 pennies on row 1 column c, and so on … how many pennies are on each square? a =   b =   c = d =   e =   f = g =   h =

Use set buikder notation to represent the following set: {, -2, -1, 0}

What is the reflection image of (5,-3) across the line y = -x?