I need help with this answer someone please help with this

Find the value of the variable and the length of each secant segment

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 dash figure is a dilation if the original figure. find the scale factor. classify the dilation as an enlargement or a reduction