Step-by-step explanation:
4p=8*15
p=120/4
p=30
hence the exact answer of following question is 30.
the starting amount would be the 550, because it doesn't have a variable assigned to it.
change per week is 20 since it is being multiplied by the number of weeks
Answer:
B. 
Step-by-step explanation:
Total number of students surveyed = 420
Of which only
prefer rap.
So, the number of people who like rap is the product of the fraction of people who prefer rap and the total number of students.

The number of students that prefer rap is 105
So the equation is
.