A system is described by the equations2x + 3y = 10 4x + By = 20 For what value of B will the system have infinitely many solutions?

For the equations below which statement is true ?

Can someone me and plz do the problem

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.