math
posted by Tomas .
Stacey is x years old. Ali is four years less than three times Stacey's age. Carli is 10 years more than twice Ali's age. What is the age difference between Stacey and Carli?
a. 2x+6
b. 3x4
c. 3x+6
d. 5x+2
e. 6x+2
please answer and explain

math 
Steve
stacey = x
ali = 3x4
carli = 2(3x4)+10
carlistacey = (2(3x4)+10)x = 5x+2
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