What is the constant of proportionality when y=4.2x

Write the sentence as an equation. z plus 372 is equal to 160

In the figure below, segment ac is congruent to segment ab: triangle abc with a segment joining vertex a to point d on side bc. side ab is congruent to side ac which statement is used to prove that angle abd is congruent to angle acd? segment ad bisects angle cab. triangle acd is similar to triangle abd. segment ad is congruent to segment ac. angle cab is congruent to angle cba.

Ben is three times as old as samantha, who is two years older than half of michel's age. if michel is 12. how old is ben?