Question: How many different items appear in the high points column when the location attendance was US Airways Center 18,422?
SQL: SELECT COUNT("High points") FROM "1-17288825-10" WHERE "Location Attendance" = 'US Airways Center 18,422';

Question: What was the high assists on April 7?
SQL: SELECT "High assists" FROM "1-17288825-10" WHERE "Date" = 'April 7';