Find (3x + 1)(x + 4) using the table of products

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.

Which table represents a linear function? i'll give brainliest to first answer ^'^

How many 2/5s are in 1 and 1/2 plz someone me right now