8 + 3x this is all the question says is 8 + 3x

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.

Sum is 17 and their difference is 3

Anna is constructing a line segment that is congruent to another segment ab. for the construction, which tool should be used to mesure segment ab