This is due in 2 hours please help

You must all emergency vehicles using a siren or flashing lights. a. honk to make your position known to b. follow c. yield the right-of-way to d. drive around

Arandom variable x has a mean of 10 and a standard deviation of 3. if each value of x is multiplied by 2, what will the new mean and standard deviation be?

Who pays into social security a employees b self employed c employers d all of the above