HELP ALOT OF POINTS!!! Which of the following points is located at 3?

1. B

2. C

3. A

4. D

Y=4x^2+x-1 solve using quadratic formula

Louis wants to carpet the rectangular floor of his basement.the basement has an area of 864 square feet.the width of the basement is 2/3 it's length. what is the length of louis's basement

Afamily has five members. a mom, a dad, two sisters, & a brother. the family lines up single file. what is the probabillity that the mom is at the front of the line