100 points to answer this question

3 times 3 + 3

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.

Can someone me out here and the tell me the greatest common factor

Atriangle has a side lengths of 18cm, 80 cm and 81cm. classify it as acute obtuse or right?