It costs Mary a fee of $6 to rent a storage unit plus $34 per month to keep her belongings in the unit. Her friend Marco wants to store a box of belongings in the storage unit and agrees to pay $2 towards the fee and $6 per month. Write an algebraic expression to represent the amount of money Mary will pay if Marco contributes for m months.

Statement reason 1. δabc is similar to δced. given 2. 3. definition of slope 4. slope of slope of definition of slope 5. slope of × slope of multiplying the slopes 6. slope of × slope of substitution property of equality 7. slope of × slope of simplifying the right side the table contains the proof of the relationship between the slopes of two perpendicular lines. what is the reason for statement 2? a. parallel line segments that meet a common perpendicular line are proportional in length. b. the lengths of vertical and horizontal sides in congruent triangles are in a common ratio. c. trigonometric identities determine the lengths of the legs in a right triangle. d. corresponding side lengths in similar triangles are proportional in length.