Answer:
4
Step-by-step explanation:
Answer: There are 90 different schedules are possible for Molly Kay.
Step-by-step explanation:
Since we have given that
Three time scheduled at 8:00, 10:00, 11:00.
Number of courses offer at 8:00 = 5
Number of courses offer at 10:00 = 9
Number of courses offer at 11:00 = 2
So, the number of different schedules are possible for Molly Kay is given by

Hence, there are 90 different schedules are possible for Molly Kay.
We solve this equation : 4y+6=-2
4 y+ 6=-2
4y=-2-6
4y=-8
y=-8/4
y=-2
Therefore: It has one solution .
Answer: 100
500 Is 100%
500 ÷ 100 = 5
5 Is 1%
5 x 20 = 100
100 Is 20%