Carl Williams, the proprietor of Carl Williams Auto Sales, estimates that with extensive television advertising, car sales over the next several years could be increasing at the rate of 4e0.3t thousand cars/year, t years from now, instead of at the current rate of 4 + 0.5t3/2 thousand cars/year, t years from now. Find how many more cars Carl expects to sell over the next 7 years by implementing his advertising plans. Round your answer to the nearest car. Hint: Consider the units of the given functions. X cars

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