Solve the problem.The cost, T, in hundreds of dollars, of tuition at one community college is given by 
where c is the number of credits for which a student registers. Graph the equation and use the graph to estimate the cost of tuition if a student registers for 8 credits.
A. About $1700
B. About $500
C. About $1200
D. About $1300
Answer: C
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Determine whether the lines through each pair of points are perpendicular.(7, 1) and (11, -7); (-6, -5) and (-10, -3)
A. perpendicular B. not perpendicular
The speed S, in meters per second, of sound in the ocean depends on the depth D, in kilometers. (It depends on other quantities as well, but those will be ignored for this problem.) The relationship is
.
At what depth is the speed of sound 1,604.04 meters per second?
?
A. 4.18 kilometers B. 5.24 kilometers C. 28,802.68 kilometers D. 4.12 kilometers
Find all solutions of the equation. Express the solution in radians.sin x = 
A. 
+ 2n?
B. 
+ 2n? or 
+ 2n?
C. 
+ 2n? or 
+ 2n?
D. 
+ 2n?
Solve the polynomial equation by using the root method.
x3 + 4 = 0
A. 2 B. 2, 0 C. -2 D. 2, -2