Answer: 
Step-by-step explanation:
Given
Azmyne decided to study a total of 
She spent
on Friday and
on Saturday
Hours spent on Friday

Hours spent on Saturday

She must study for

Answer:
n = 1500
Step-by-step explanation:
The sample size is the number of students that were asked
n = 1500
35% of 80 is 28.
80 x 0.35 = 28
I hope this helps.