Maybe if you payed attention in class you would know.
55x=330. so x=6 the domain is 6 because its the input and 330 is the range because its the outpt
12miles per hour=1hr
1sec=12÷3600=0.00333333
D. since if you plug in the Pythagorean therom it comes out true and the Pythagorean therom only works on right triangles. also isosceles have 2 side lengths the same.