Solve the problem.Given is a graph of a portion of the postage function, which depicts the cost (in cents) of mailing a letter, p, versus the weight (in ounces) of the letter, x. What is the postage for a letter weighing 
Is the postage function continuous?
A. 55 cents; 55 cents; 77 cents; yes
B. 33 cents; 55 cents; 77 cents; no
C. 55 cents; 77 cents; 77 cents; no
D. 55 cents; 55 cents; 77 cents; no
Answer: D
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Determine the symmetries of the curve.r = -2 sin ? - 4 cos ?
A. y-axis only B. No symmetry C. x-axis, y-axis, origin D. x-axis only
Solve the problem.At Allied Electronics, production has begun on the X-15 Computer Chip. The total revenue function is given by 
and the total cost function is given by 
, where x represents the number of boxes of computer chips produced. The total profit function, P(x), is such that 
. Find P(x).
A. P(x) = 0.3x2 + 50x - 16 B. P(x) = -0.3x2 + 48x + 8 C. P(x) = -0.3x2 + 50x - 8 D. P(x) = 0.3x2 + 48x - 24
Add or subtract as indicated.
+ 
A. 
B. 
C. 
D. 
Use graphs to find the set.(-10, 0) ? [-3, 2]
A. (0, 2] B. (-10, -3] C. [-3, 0) D. (-10, 2]