Write the phrase as a variable expression. Use x to represent "a number."The product of 6 and a number
A. 
B. 6 + x
C. 6x
D. 6 - x
Answer: C
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Find a simplified form of f(x). Assume that x can be any real number.f(x) = 
A. f(x) = 12x6
B. f(x) = 6x7
C. f(x) = -6x7
D. f(x) = -12x6
Solve the problem.Nikki is fishing from a bank 31 feet above water level. In this location, the fish tend to feed at 40 feet below the surface. How long must Nikki's fish line be to reach the fish?
A. 71 feet B. -9 feet C. 9 feet D. -31 feet
Answer the question.Consider the numbers 12, 
, -14, 0, 
, 
, 0.
, 0.2, 0.12413... Which are whole numbers?
A. 12, -14, 0
B. 12, -14, 0, 
C. 12, 0, 
D. 12, -14, 0, 
, 0.
, 0.2
Find the flux of the vector field F across the surface S in the indicated direction.F = 9xi + 9yj + zk; S is portion of the plane x + y + z = 2 for which 0 ? x ? 5 and 
direction is outward (away from origin)
A. - 950 B. 1050 C. 1025 D. 2100