Question

Need some help on this problem please!

Answer 1

`\large\boxed{A.\ \sum\limits_(i=0)^(4)5^i}`

Explanation:

`1=5^0\\\\5=5^1\\\\25=5^2\\\\125=5^3\\\\625=5^4\\\\\sum\limits_(i=0)^(4)5^i=5^0+5^1+5^2+5^3+5^4`

Answer 2

C

Explanation:

Since

i = 0 :
`5^(0)` = 1

i = 1 :
`5^(1)` = 5

i = 2 : 5² = 25

i = 3 : 5³ = 125

i = 4 :
`5^(4)` = 625

Hence C generates the correct series