label( [ 0, B - 1 ], "\\text{Draw " + plural( A, "circle" ) + ".}", "right" );
drawRow( A, B - 3, "#6495ED", 1 );
label( [ 0, B - 2 ], "\\text{"
+ "If there" + ( B === 1 ? " is " : " are " ) + plural( B, "row" )
+ " with " + plural( A, "circle" ) + ( B === 1 ? " " : " each " )
+ ", there is a total of how many circles?"
+ "}",
"right" );
for ( var i = 1; i < B; i++ ) {
drawRow( A, B - 3 - i, "#28AE7B", A * i + 1 );
}