Use modular arithmetic to find the answer.Find all x such that x = 9 (mod 13).
A. x = 13 + 9k, where k is an integer
B. x = 9 + 13k, where k is an integer
C. x = 13 + 22k, where k is an integer
D. x = 9 + 13
Answer: B
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Solve the problem.The expression 
(F - 32) can be used to convert Fahrenheit to Celsius degrees. On January 29, the high temperature was 
Find the corresponding Celsius temperature (to the nearest degree).
A. 1°C B. 49°C C. 33°C D. 15°C
Find the gross pay at the given rate. Round to the nearest cent.11.6 hours at $7.16 per hour and 7.5 hours at $13.68 per hour
A. $195.66 B. $185.66 C. $195.76 D. $175.66
Find an equation for the conic. If the conic is a parabola, assume that the vertex is at the origin. If the conic is an ellipse or hyperbola, assume that it is centered at the origin.Focus at (3, 0) and e = 
A. 
- 
= 1
B. 
+ 
= 1
C. 
- 
= 1
D. 
+ 
= 1
Find the quadratic approximation of f at x = 0.f(x) = esin 7x
A. p2(x) = 7x + 
x2
B. p2(x) = 1 + 7x + 
x2
C. p2(x) = 7x - 
x2
D. p2(x) = 1 - 7x + 
x2