What is the constant of proportionality for y=3.99x

Ariel is working at a meat packing plant for 5 nights a week. her regular wage is $11 an hour. she earns tine and a half for any overtime hours. this week she worked 9 hours of over time .how much will ariel earn for overtime this week ?

Segment an is an altitude of right δabc with a right angle at a. if ab = 2, squared 5 in and nc = 1 in, find bn, an, ac.

I'm a polygon i have no parallel lines i am formed 3 line segments i have one right angle two of my angles are angles what am i