There were 27 rolls in each box because (9x12)/4= 27
Number of exams per semester = 5
Average of first four exams = 90
Therefore,
Total of first four exams = 90*4 = 360 marks
Based on 5 exams,
Average = 360/5 = 72
Answer:
<h2>$43.2</h2>
Step-by-step explanation:
Step one:
given data
the total cost function is
c=2.60b + 12
Step two:
Required is c, when b= 12
substitute b=12 we have
c=2.60(12) + 12
c=31.2+ 12
c=43.2
the total cost = $43.2
Let P = the value of the initial deposit.
Given:
A = 2,033.88, the current amount
r = 2.9% = 0.029, interest rate
n = 12, compounding interval
t = 9 years
Then

That is,
P(1 + 0.029/12)¹⁰⁸ = 2203.88
1.2978P = 2203.88
P = $1,698.17
Answer: $1,698.17