Is this correct? or the answer is B? im confused

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.

What numbers are included in the set of integers? what numbers are not included?

Lines a and b are parallel. what is the value of x? -5 -10 -35 -55