Mr. Dionne is the band director at school. He asked students to record how long they have played an instrument. The dot plot shows data he has recorded. What unit of measure is used in the study?

A. Number of observations

B. Number of instruments

C. Number of students

D. Years

x= 149. 24+7=31. 180-31=149

your welcome

yess

step-by-step explanation:

idk whyy this is happening, i cant even read my notification bc i keep getting errors

~coco

step-by-step explanation:

5=812a+9+3

step 1: simplify both sides of the equation.

5=812a+9+3

5=(812a)+(9+3)(combine like terms)

5=812a+12

5=812a+12

step 2: flip the equation.

812a+12=5

step 3: subtract 12 from both sides.

812a+12−12=5−12

812a=−7

step 4: divide both sides by 812.

812a /812 = -7/812

a= -1/116

so the answer is

a=   -1/116