What two things do you replace with values in a geometric sequence in the explicit form, LaTeX: a_n\:=\:a_1\cdot\left(r\right)^{n-1 }a n = a 1 ⋅ ( r ) n − 1?

and ; then provide your illustrative example

option c) graph of line going through 1, 4 and 3, 10

step-by-step explanation:

let y equal to margo's coin collection

let x equal to number of years

at the begining x=0, y=1 → point=(x,y)→point=(0,1)

she adds 3 coins per year, then y=1+3x

at x=1, y=1+3(1)=1+3→y=4→point=(x,y)→point=(1,4)

at x=3, y=1+3(3)=1+9→y=10→point=(x,y)→point=(3,10)

the graph of line going through (1, 4) and (3, 10), then the option c is the correct.

70 years.

step-by-step explanation:

c-   36

taxicab circle radius 9 has 4(9) = 36 points