Determine if the argument is valid.
is less than 16. 8 is less than 16. Therefore, 
is less than 8.
A. Invalid
B. Valid
Answer: A
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Use a proportion to solve the problem.On a map of the Thunderbird Country Club golf course, 1.5 inches represent 30 yards. How long is the 13th hole if the map shows 11 inches?
A. 495 yards B. 220 yards C. 4.1 yards D. 330 yards
Solve the problem.A coin is tossed upward from a balcony 390 ft high (h0) with an initial velocity (v0) of 
, according to the formula h(t) = -16t2 + v0t + h0, where t is time in seconds. During what interval of time will the coin be at a height of at least 70 ft?
A. 0 sec ? t ? 5 sec B. 5 sec ? t ? 10 sec C. 0 sec ? t ? 1 sec D. 4 sec ? t ? 5 sec
Use half-angle formulas to find the exact value for the following:
?
?
A. 
B. ?
C. ?
D. ?
E. ?
Use the elimination method by addition to find the solution for the following system.
A. x = 3, y = 8, z = 6 B. x = 3, y = 6, z = 8 C. x = -3, y = 6, z = 6 D. The system is inconsistent.