Use the information in the table to answer the questions. me i'm really stuck

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.

Math question.. plz me .. best answer all

Which of the following statements must be true about this diagram? check all that apply. x°, y°, z°, & w°