Tell whether each relationship is a function

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 =

What is the radius of a circle with an area of 78.5 cubic inches? use 3.14 for pie

Rose bought a new hat when she was on vacation. the following formula describes the percent sales tax rose paid b=t-c/c