Dante is making a necklace with 18 rows of tiny beads in which the number of beads per row is given by the series 3 + 10 + 17 + 24 + ...

a. Use summation notation to write the series, give
i.the lower limit of the sum
ii.the upper limit of the sum
iii.the explicit formula of the sum
b. Find the total number of beads in the necklace. Explain your method for finding the total number of beads.

Question

Dante is making a necklace with 18 rows of tiny beads in which the number of beads per row is given by the series 3 + 10 + 17 + 24 + ... 

a. Use summation notation to write the series, give 
i.the lower limit of the sum
ii.the upper limit of the sum
iii.the explicit formula of the sum
b. Find the total number of beads in the necklace. Explain your method for finding the total number of beads.

jonnyvonny · Answer

Well, its increasing by 7 each time, so thats the slope. The initial point, when x=0, is 3.
y=7x+3

anonymous · Answer

i need the lower limit of the sum and the upper limit