Geometric Sequences Answers

A sequence of numbers begins with 12 and progresses geometrically. Each number is the previous number divided by 2.

Select two options.

A conservationist determines that a particular beach is eroding at a rate of 1.1% each year. When writing an explicit formula to represent the amount of beach remaining each year, which value should she use as the common ratio?

Which graph represents a geometric sequence?

The points shown on the graph represent the numbers in a geometric sequence.

Isaak is writing an explicit formula to represent the sequence.64, 112, 196, 343, ...What value should he use as the common ratio in the formula? Write the answer as a decimal rounded to the nearest hundredth.

–81, 108, –144, 192, ...

Which formula can be used to describe the sequence?, −4, −24, −144,...

Negative 2 and two-thirds, negative 5 and one-third, negative 10 and two-thirds, negative 21 and one-third, negative 42 and two-thirds, ellipsis

Lena is asked to write an explicit formula for the graphed geometric sequence.