Use a truth table to determine whether the argument is valid.(~p ? q) ? (q ? r)~q ? r p ? q
A. Valid
B. Invalid
Answer: B
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You have 522 pairs of shoes in stock. You sell 41 pairs of shoes each week. ? A: Find a formula that gives the number S of pairs of shoes in stock after n weeks of sales. ? B: You need to reorder when stock supplies are reduced to -11 pairs of shoes. After how many weeks will you need to reorder?
What will be an ideal response?
Divide using synthetic division.
A. m2 + 5m + 6 B. 7m2 + 4m + 4 C. m2 + 4m + 7 D. 7m2 - 4m + 4
Solve the problem.A window washer accidentally drops a bucket from the top of a 400-foot building. The height h of the bucket after t seconds is given by 
When will the bucket hit the ground?
A. 25 sec B. -5 sec C. 80 sec D. 5 sec
Solve.In a chemical reaction, substance A decomposes at a rate proportional to the amount of A present. It is found that 10 g of A will reduce to 5 g in 3.5 hours. After how long will there be only 1 g left?
A. 8.8 hours B. 11.6 hours C. 15.8 hours D. 8.1 hours