This is a true or false answer please help me**

The multiplication property of zero states that the product of any number and 0 is 0. what must be true about either a or b to make ab=0

Answer this question only if you know the 30 points and

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.