Find the x-intercepts of the function.f(x) = x1/2 + 3x1/4 - 28
A. (256, 0), (2401, 0)
B. (7, 0)
C. (256, 0)
D. (4, 0), (-7, 0)
Answer: C
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Solve the system of linear equations. x - 2y = -2 3x - 3y = 9
A. (8, 5) B. (7, 6) C. Inconsistent: no solutions D. (-8, 6)
Perform the indicated operation. Simplify, if possible.
+ 
A. 
B. 
C. 
D. 
Solve.Jim can run 5 miles per hour on level ground on a still day. One windy day, he runs 15 miles with the wind, and in the same amount of time runs 7 miles against the wind. What is the rate of the wind?
A. 13
mph
B. 4 mph
C. 5 mph
D. 1
mph
Suppose the formula for wind chill C (in degrees Fahrenheit) is given by 
where v is the wind speed in miles per hour and T is the temperature in degrees Fahrenheit. The wind speed is 
miles per hour and the temperature is
data-wiris-created="true" src="https://sciemce.com/media/2/ppg__cognero__Section_13.4__media__f3e17275-77dd-4279-8c4e-24a74c7fdbbd.PNG" style="vertical-align:middle;" /> Fahrenheit. Use 
to estimate the relative error in calculating the wind chill. Round your answer to two decimal places.
?
A. 
B. ?
C. ?
D. ?
E. ?