Question

HELP ME IM SO CONFUSED

Answer 1

Refer to the attachment

Answer 2

• 1) 4812 students
• 2) 763 pounds
• 3) $30906.76

Explanation:

1)

• Initial number = 2988
• Rate of increase = 10%

Number of students after 6 years:

• 
  `a_6 = 2988(1+0.1)^(6-1) = 4812`

2)

• Initial number = 1200
• Rate of decrease = 14%

Amount of gold after 4 years:

• 
  `a_4=1200(1-0.14)^3 = 763`

3)

• Initial number = 28000
• Rate of increase = 2.5%

a)

Salary after n years:

• 
  `a_n=28000(1+0.025)^(n-1) = 28000*1.025^(n-1)`

b)

Salary in the 5th year:

• 
  `a_5=28000*1.025^4 = 30906.76`