Use first and second differences to determine whether the sequence
6,8,10,12,14,... is linear, quadratic, or neither. Note: the first term in the sequence corresponds to x=1\displaystyle {x}={1}.

a) The sequence is .

b) If the sequence is linear or quadratic, write an equation for the sequence in terms of x\displaystyle {x}. If "neither", enter XXX.
The equation is y=\displaystyle {y}=  

c) If the sequence is linear or quadratic, find the next term in the sequence. If "neither", enter XXX.
The next term is .