Which is the graph of the step function f(x)? -1. x < -1
f(x) = { 0, -15xs1
1, X>1
3
1
2
3
4

Twenty-five percent of the customers entering a grocery store between 5 p.m. and 7 p.m. use an express checkout. consider five randomly selected customers, and let x denote the number among the five who use the express checkout.

The graph shows the distance y, in inches, a pendulum moves to the right (positive displacement) and to the left (negative displacement), for a given number of seconds x. how many seconds are required for the pendulum to move from its resting position and return? enter your answer in the box.

For what value of (y) is 3^3/3^y =1/9