State the phrase as a mathematical expression. Use x to represent the variable.Three times a number, added to 9
A. 3x + 9
B. 3x
C. 3 ? 9 + x
D. 3(x + 9)
Answer: A
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Find the vertices and foci of the ellipse.49x2 + 64y2 = 3,136
A. Vertices: (0, ±8); Foci (0, ±
)
B. Vertices: (±8, 0); Foci: (±
, 0)
C. Vertices: (0, ±7); Foci (0, ±
)
D. Vertices: (±7, 0); Foci: (±
, 0)
Solve the application problem.The public swimming pool, which is a rectangle measuring 
by 
needs a new deck. The deck of uniform width that will surround the pool will be made of concrete. There is only enough money in the budget to cover 
with concrete. How wide should the path be?
A. 8 m B. 12 m C. 10 m D. 6 m
Solve.The population growth of an animal species is described by 
where t is measured in months. Find the population of this species in an area 40 month(s) after the species is introduced.
A. 4950 B. 1100 C. 2495 D. 560
Parametrize the surface S.S is the lower portion of the sphere x2 + y2 + z2 = 64 cut by the cone z = 
What will be an ideal response?