3.) 2 × 0.5 = 1
4.) -2 × -0.5 = 1
A rational expression is undefined when the denominator is zero.

is undefined when x=0 or x=2.
Answer:
B
Step-by-step explanation:
Answer:
A) but it is not a good choice.
Step-by-step explanation:
I don't like A much. An Isosceles triangle has 2 congruent sides. If all three are congruent, it is equilateral.
Of the three choices however, it is A. B is a scalene triangle and C is as stated, equilateral.