Easy question - giving if correct - MUST USE PROPORTION TO SOLVE.

This week, conrad will work 1 3/4 times longer than last week. giovanni will work 1 1/3 times longer than last week. sally will work 2/3 the number of hours she worked last week. match each employee's name to the number of hours he or she will work this week

Which radical expression is a rational number? a. √ 360 b. √ 644 c. √ 225 d. √ 122

Zahra runs a 500-meter race at a constant speed. which graph shows her distance from the finish line during the race?