Solve and check. Identify any extraneous solutions.
+ 
= 
A. -4
B. No solution (-4 is extraneous)
C. 0, 4
D. 3
Answer: B
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Fill in the blank with the proper symbol ( <, >, or = ) to make a true statement.
?
11.71 ____ 
11.79
?
A.
11.71 < 
11.79
B.
11.79 = 11.79
C.
11.71 = 11.71
D.
11.71 > 
11.79
E.
11.71 = 
11.79
Find the slope of the curve at the given point P. y = x2 + 5x, P(4, 20)
A. 13 B. 21 C. 3 D. 9
Use the method of your choice to find all real solutions of the equation.2x2 + 12x = - 7
A. 
B. 
C. 
D. 
Solve the problem.The wind chill factor represents the equivalent air temperature at a standard wind speed that would produce the same heat loss as the given temperature and wind speed. One formula for computing the equivalent temperature is W(t) = 
where v represents the wind speed (in meters per second) and t represents the air temperature 
. Compute the wind chill for an air temperature of 15°C and a wind speed of 12 meters per second. (Round the answer to one decimal place.)
Fill in the blank(s) with the appropriate word(s).