Can you please help me with this question please I will give you extra points and the brain thing. show work please do all

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.

Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.

5x−4≥12 or 12x+5≤−4 can you with this problem