Each week, Victor has set a goal to practice playing his saxophone for at least 5 hours. He has already practiced 1 1/2 hours this week. How many more 30 minute practice sessions must Victor plan for the week in order to meet or exceed his goal?

Hi, can anyone show me how to do this problem? 100 points for this. in advance

The party planning committee has to determine the number of tables needed for an upcoming event. if a square table can fit 8 people and a round table can fit 6 people, the equation 150 = 8x + 6y represents the number of each type of table needed for 150 people.

12 out of 30 people chose their favourite colour as blue caculate the angle you would use for blue on a pie chart