keeping in mind that a line with a slope of "0" is a horizontal line, Check the picture below.
72/8 +3*4 - 105 /5
= 9 + 12 - 21
= 21 -21
= 0
She estimated by rounding 907 -> 900 and 626 -> 630 and when you subtract them, you get 270, which is how she estimated >300 people would arrive in the afternoon
Answer:
a5 =243 x (1/3)^(5-1) = 243x 1/81 =3
Explanation
a(n) = a(1) x r^(n-1)