Which of the following is the equation for the nth term of the geometric sequence: 125, -50, 20, -8,..
a^n =125 (-2/5)^(n-1)

a^n =2/5 (125n -1)

a^n =125 (2/5)^n-1

a^n =-2/5 (125n -1)

Suppose that sahil knows that 45 people with ages of 18 to 29 voted. without using a calculator, he quickly says then 135 people with ages of 30to 49 voted. is he correct? how might sohil have come up with his answer so quickly?

Graph the system of inequalities presented here on your own paper, then use your graph to answer the following questions: y > 2x + 3y is less than negative 3 over 2 times x minus 4part a: describe the graph of the system, including shading and the types of lines graphed. provide a description of the solution area. (6 points)part b: is the point (â’4, 6) included in the solution area for the system? justify your answer mathematically. (4 points)

Consider the first four terms of the sequence below. what is the 8th term of this sequence?