The radius of a circle is doubled a. how does the circumference change? b. how does the area change?

Find the number of real number solutions for the equation. x2 + 5x + 7 = 0 0 cannot be determined 1 2

What is the value of x in the following equation. -x ^3/2 = -27

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