Rashida owns a bike rental company. She charges an initial fee of $10 for each rental and an hourly rate $4. Which of the equations below shows the amount y that Rashida charges for a bike rental that lasts x hours?

We do know 7th grade students in that music class preferred music rather than silence. As shown, 18 students out of a total of 27 students preferred music as opposed to silence. And only 9 students preferred silence over music in the classroom. Therefore we can say 7th grade students in this class preferred music by double the amount of students that preferred silence.