The value of a baseball card can be represented by the equation Y = 3x+39, where x represents the number of yea that Robert has owned the card and y represents the total value, in dollars, of the card. What was the value of the c
when Robert originally purchased it?

If f(x) = 6x – 4, what is f(x) when x = 8? a2 b16 c44 d52

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.

Cd is the perpendicular bisector of both xy and st, and cy=20. find xy.