given △XYZ with line k containing point y, and k ∥ XZ. which statement is most likely to prove m∠X + m∠ XZ+ m∠Z = 180

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.