![Martina turns on a treadmill to start walking. She takes 1 minute to gradually increase her speed and then walks at the same speed for 4 minutes. She increases her speed twice more during the 15 minutes she is on the treadmill, as shown on the graph below. Which best describes the function of Martina's walking speed over the intervall [0,15] ？ Martina’s Walk on the Treadmill a piecewise function with separate pieces of linear functions only a single linear function with three points of discontinuity a piecewise function with separate pieces of linear and step functions Time in minutesa step function for the entire interval](http://servicexpressmaroc.com/photo/6500a0aa58822.webp)
Martina turns on a treadmill to start walking. She takes 1 minute to gradually increase her speed and then walks at the same speed for 4 minutes. She increases her speed twice more during the 15 minutes she is on the treadmill, as shown on the graph below. Which best describes the function of Martina's walking speed over the intervall [0,15] ？ Martina’s Walk on the Treadmill a piecewise function with separate pieces of linear functions only a single linear function with three points of discontinuity a piecewise function with separate pieces of linear and step functions Time in minutesa step function for the entire interval
Accepted Solution
![Martina turns on a treadmill to start walking. She takes 1 minute to gradually increase her speed and then walks at the same speed for 4 minutes. She increases her speed twice more during the 15 minutes she is on the treadmill, as shown on the graph below. Which best describes the function of Martina's walking speed over the intervall [0,15] ？ Martina’s Walk on the Treadmill a piecewise function with separate pieces of linear functions only a single linear function with three points of discontinuity a piecewise function with separate pieces of linear and step functions Time in minutesa step function for the entire interval](http://servicexpressmaroc.com/photo/6500a0a9b7134.webp)
