There are 150 students in the marching band and 30 of them play the trumpet Which number line represents the percent of the students in the marching band who play the trumpet ON 1096 2096 3096 4096 5096 60967006 8096 9006 10096 1096 20% 3096 4096 506 606709680969006 10046 096 100 200 300 400 500 60% 70% 80% 90% 100% 09 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%​

Ihave a 69 and an 82. the 69 is worth 40% of my grade and the 82 is worth 15%. can someone tell me my current average grade.

The decibel level of sound is 50 db greater on a busy street than in a quiet room where the intensity of sound is watt/m2. the level of sound in the quiet room is db, and the intensity of sound in the busy street is watt/m2. use the formula , where is the sound level in decibels, i is the intensity of sound, and is the smallest sound intensity that can be heard by the human ear (roughly equal to watts/m2).

If 3x+8=3x+8 is it one solution or no solution