Iam greater than 60 and less than 85. i am a multiple of 9. i am even

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

Find the maximum value of p= 4x + 5y subject to the following constraints :

Rationalize the denominator- 12x/√x-10