Ms karane orders a total of 350 black, blue and red pens for the school she orders 170 black pens and she orders 120 blue pens.
2 answers:
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Answer:
D. A(n) = P + (n-1)i*P
Step-by-step explanation:
The formula to calculate the simple interest is:
Replace i by , then
SI = Pni
where n is the number of years.
So, for n-1 years, the simple interest is:
SI = P(n-1)*i
The Total amount is:
A(n) = P + (n-1)i*P