1. DEF
2. 3rd option
3. Angles<span> 3 and 5 are alternate interior angles, as are angles 2 and 8. Alternate interior angles are </span>congruent<span>.
5. 94</span>
10% chance of burning out
100-10= 90% chance of not burning out
90% = 0.9
3 lightbulbs
0.9^3 = 0.729 = 72.9%
The probability that all 3 lightbulbs stay lit by the end of the month is 72.9%