Expression 7: left parenthesis, "x" plus 20 , right parenthesis squared plus left parenthesis, "y" minus 10 , right parenthesis squared less than or equal to "u" Has graph.x+202+y−102≤u
7
Expression 8: "u" equals negative 3.5 8u=−3.58
negative 10−10
1010
8
Expression 9: left parenthesis, "x" plus 20 , right parenthesis squared plus left parenthesis, "y" minus 10 , right parenthesis squared less than or equal to "i" Has graph. To audio trace, press ALT+T.x+202+y−102≤i