Which formula can be used to sum the first n terms of a geometric sequence?
1-r
Sn = 21
1–ph
Sn=a,
1–ph
1-7
an
S =
- r
n
a1
Sn
1-1

Bismuth-210 is an isotope that radioactively decays by about 13% each day, meaning 13% of the remaining bismuth-210 transforms into another atom (polonium-210 in this case) each day. if you begin with 233 mg of bismuth-210, how much remains after 8 days?

Polynomial that can be factored as (3x-4)(3x+4)

Which values of m and b will create a system of equations with no solution? y=mx+b y=-2x+3/2