Use the formula for the sum of the first n terms of an arithmetic sequence to find the indicated sum.
-$$\sum _ { \mathrm { i } = 1 } ^ { 49 } ( 5 \mathrm { i } + 5 )$$
A) $6247.5$
B) $6541.5$
C) 6713
D) 6370

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The Answer of Use the formula for the sum of the first n terms of an arithmetic sequence to find the indicated sum.
-$$\sum _ { \mathrm { i } = 1 } ^ { 49 } ( 5 \mathrm { i } + 5 )$$
A) $6247.5$
B) $6541.5$
C) 6713
D) 6370

Use the Formula for the Sum of the First N ∑i=149(5i+5)\sum _ { \mathrm { i } = 1 } ^ { 49 } ( 5 \mathrm { i } + 5 )i=1∑49​(5i+5)

Use the Formula for the Sum of the First N $\sum _ { \mathrm { i } = 1 } ^ { 49 } ( 5 \mathrm { i } + 5 )$