Someone please help me idk what to do

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 =

Solve this and show you’re work step by step ! -5 3/4+3h< 9 1/4 -

Valentina is subtracting from . she finds the lcd to be 15y2. what is valentina's next step?