Question

Sum of first n terms of an arithmetic sequence is
3n2_ 6n.
a) Calculate first term and common difference? [2]
b) Write the algebraic form? [1]
c) Find its 15th term? [1]
3. Calculate the sum of multiplies of 7 between 100 and
300? [

Answer 1

Answer:

mark on brainlist.. guys

Answer 2

Sorry bro...

really sorry

i dont know the answer

me... really weak in mathz

its been 3 days that u asked this qn

that's the reason y i answerd