Step-by-step explanation:
4/5 is the simplified fraction for 48/60.
In order to be a function, every x-value must correspond to only one y-value.
Answer: D
The answer is that it's a right triangle. One angle is 90°
Answer:

Step-by-step explanation:
5x4+20x3-105x2
5x2( x^2 +4x -21)
