A company has tow electric motors consume varying amounts of power. The power consumed by each motor is a function of the time (t in minutes) for which it runs. The cost of power (in $) to run one motor is given by the function Ca (t) = t^2-2t+5. The cost of running the second motor is given by Cb (t) = 3t+2. Which gives the total cost of running both motors?

C (t) = 3t^3-6t^2+15t

C (t) = 2t^2-4t+10

C (t) = t^2+t+7

C (t) = 3t^3+6t^2-15t

Question

18 September, 16:00

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Aryn · Answer 1

C (t) = t^2+t+7

To get this answer you must add the two equation together, and add together the like terms (Ex. 3t-2t and 5+2)