Find the unknown value in the percent proportion 
Round to the nearest tenth, if necessary.part = 20, percent = 60
A. whole = 3.3
B. whole = 33.3
C. whole = 16.7
D. whole = 300
Answer: B
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Write the imaginary numbers using the letter i.
A. -11i
B. ±11
C. -i
D. 11i
Provide an appropriate response. The angles of elevation to an airplane from two points A and B on level ground are 53° and 71°, respectively. The points A and B are 2.8 miles apart, and the airplane is east of both points in the same vertical plane. Find the altitude of the plane.
A. 8.6 miles B. 0.9 miles C. 27.7 miles D. 6.8 miles
For the given functions f and g, find the requested composite function value.f(x) = 4x + 6, g(x) = 4x2 + 3;
Find (g ? g)(4).
A. 1939 B. 274 C. 17,959 D. 94
Factor the trinomial completely. If the polynomial cannot be factored, write "prime."-x2 - 3x + 28
A. -1(x - 7)(x - 4) B. -1(x - 7)(x + 1) C. -1(x - 7)(x + 4) D. -1(x + 7)(x - 4)