Respuesta :

heardkay97
12 is just saying to add the two expressions
4x^2 -3

13 means add them together as well and then evaluate at t=5

(8)2^t + 2^(t+3)
(8)2^(5) + 2^(5+3)

8(32)+ 2^(8)
256+256
512

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