Simplify the expression ; 1/2(6x - - 3)

i suck at math and i've been trying to do this for 20 min now - so if someone could that would be great! : )

Find the roots of the equation below. x^2 - 6 + 9 = 0

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

The area of a circle is equal to 1 dm². find the radius of the circle.