Multiply and simplify.
? 
A. 6
B. 
C. 
D. 
Answer: B
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A reflector for a satellite dish is parabolic in cross section, with the receiver at the focus F. The reflector is 1 ft deep and 30 ft wide from rim to rim (see the figure). How far is the receiver from the vertex of the parabolic reflector? 
?
Round to the nearest foot, if necessary.
?
?
A. 59 ft
B. 51 ft
C. 56 ft
D. 53 ft
E. 52 ft
Solve the equation 5 x = 8. Round to three decimal places.
a. x = 1.415 b. x = 2.292 c. x = 2.526 d. x = 1.292
Find the geometric mean between 28 and 18.
Use a graphing utility to graph the function over the indicated interval and approximate any local maxima and local minima. Determine where the function is increasing and where it is decreasing. If necessary, round answers to two decimal places.f(x) = x5 - x2; (-2, 2)
What will be an ideal response?