Respuesta :

It's asking for the rate of change, which is the 10
so I think that means that a plain pizza costs $10
c is the answer number of topping  cost2$ each

and rate of change will be d=2t+10
if t=1 then d=12,
t=2 d=14
t=3 d=16

rate of change is change in d/change in t
2

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