Which of the following are factors of x^2 − 7x? A. x^2 and 7x
B. x and (x-7)
C. (x+7) and (x+1)
D. 7x and (x-1)

Can somebody me out with this question

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.

Joanie watched 1 out of three of a movie in the morning