
What is the average number for this month? 



Question: 6. What is the negative solution of this equation x^2  4x + 4 = 0? 



Question: 7. What is a value of (3/5  1/4)? Is it a decimal number? 




Question: 8. Set A contains only the factors of 21 that are greater than 1, 
and set B contains only the factors of 48 that are greater than 1. 
If set C is the union of sets A and B , what is the mode of set C? 




Question: 9. If a + b = 7 and a^2 + b^2 = 37, then what is the value of ab? 




Question: 10. If someone needs to cover the same distance, moving with 
constant speed, the time of his journey and his speed are in indirect variation. 
If walking with a speed 6 km/hour, someone needs 5 hours for the whole 
journey, what will be the speed of his car, if he covers this distance by 
car within one hour? 
How long is this distance? 




Question: 11. Roberto travels from his home to the beach driving at 30 mph. 
He returns along the same route at 50 mph. 
If the distance from Roberto's house to the beach is ten miles, then 
what is Roberto's average speed for the round trips in miles per hour? 





