In science class, troy found the mass in grams of samples to be 10, 12, 7, 8, 5, and 6. what is the mean absolute deviation

Anyone know? is appreciated! will mark brainliest if correct!

Marco has $38.43 dollars in his checking account. his checking account is linked to his amazon music account so he can buy music. the songs he purchases cost $1.29. part 1: write an expression to describe the amount of money in his checking account in relationship to the number of songs he purchases. part 2: describe what the variable represents in this situation.

10% of 1,900,000. show me how you got the answer