Solve the application. Write an expression to describe the situation and simplify the expression for the final answer.A submarine is 240 feet below sea level. It dives down to twice that depth. What is the new depth of the submarine?
A. 3(-240) = -720; The new depth is -720 ft below sea level.
B. 3(240) = 720; The new depth is 720 ft below sea level.
C. 2(-240) = -480; The new depth is 480 ft below sea level.
D. 2(-240) = -480; The new depth is -480 ft below sea level.
Answer: C
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Determine convergence or divergence of the series.
A. Diverges B. Converges
List the indicated feature of the figure.The faces of
A. ?ABCF, ?AEDF, ?ABE, ?CFD, ?BCDE
B. 
, 
, 
, 
, 
, 
, 
, 
, 
C. A, B, C, D, E, F
D. Cannot be identified
Solve the problem.The path of a projectile fired at an inclination ? (in degrees) to the horizontal with an initial velocity v0 is a parabola. The range R of the projectile, that is, the horizontal distance that the projectile travels, is found by using the formula 
where g is the acceleration due to gravity. Suppose the projectile is fired with an initial velocity of 400 feet per seconds and 
per second2. What angle ?, 
would you select for the
range to be 2500 feet? (There should be two values of ?.) Fill in the blank(s) with the appropriate word(s).
Add or subtract as indicated. Express the answer as a single polynomial in standard form.(5x5 + 5x3) + (3x5 + 2x3 + 5)
A. 5x + 7x5 - 3x3 B. 12x9 C. 8x5 + 7x3 + 5 D. -5x5 + 7x3 + 5x