Determine whether the argument is valid or invalid.If I were your friend and you were my soulmate, then I'd never stop liking you. I've stopped liking you. Therefore, I am not your friend or you were not my soulmate.
A. Valid
B. Invalid
Answer: A
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Evaluate the integral by changing the order of integration in an appropriate way.
A. 1 ln 126
B. 
ln 126
C. 
ln 626
D. 1 ln 626
Find the absolute value of the complex number.z = 2 + i
A. 3
B. 
C. 5
D. 
Solve the problem.A gas station sells 4820 gallons of regular unleaded gasoline on a day when they charge $4.35 per gallon, whereas they sell 3847 gallons on a day that they charge $4.40 per gallon. Find a linear function that expresses gallons sold as a function of price.
A. y = -19,460x + 89,449.2 B. y = -19,460x + 89,454.8 C. y = -19,460x + 89,487 D. y = -19,460x + 89,471
Solve the problem.The stadium vending company finds that sales of hot dogs average 37,000 hot dogs per game when the hot dogs sell for $2.50 each. For each 50 cent increase in the price, the sales per game drop by 5000 hot dogs. What price per hot dog should the vending company charge to realize the maximum revenue?
A. $3.35 B. $1.20 C. $3.10 D. $3.70