A laptop computer that costs $1125 new has a book value of $525 after 2 years. (a) Find a linear model V = mt + b. v(t) = (b) Find an exponential model V = aet. (Round your values to four decimal places.) v(t)= (c) Use a graphing utility to graph the two models in the same viewing window. (Select the correct graph.) 1000 800- 600 400 200- 800 600 V 400 2 1000 800 V 600- 400 0 200 0 -200 400 1000 500 2 3