What is the sum of the geometric series?
if you could explain how to solve it, that would me a lot

The number above the sum sign is the number of terms in the series, so 5.

The n=1 below the sum sign, means the series starts at 1

Replace n with values from 1 to 5 and then add them together:

4(2)^1 = 8

4(2)^2 = 16

4(2)^3 = 32

4(2)^4 = 64

4(2)^5 = 128

Sum = 8 + 16 + 32 + 64 + 128 = 248

26 is 33.33% of 78

step-by-step explanation:

26 is what percent of 78?

26 is p% of 78

equation: y = p% * x

solving our equation for p

p% = y/x

p% = 26/78

p = 0.3333

convert decimal to percent:

p% = 0.3333 * 100 = 33.33%