Can anybody help me answer this ASAP thank you

In the figure shown below, m < 40 and ab =8. which equation could be used to find x?

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.

The difference of three and the reciprocal of a number is equal to the quotient of 20 and the number. find the number.