Find the length of the curve.
e. None of these
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The graph of a one-to-one function f is given. Draw the graph of the inverse function f-1 as a dashed line or curve.f(x) = 
A. Function is its own inverse
B. 
The spread of a contaminant is increasing in a circular pattern on the surface of a lake. The radius of the contaminant can be modeled by 
, where r is the radius in meters and t is the time in hours since contamination.
?
Find a function that gives the area A of the circular lake in terms of the time since the spread began.
?
A. 
B. 
C. 
D. 
E. 
Evaluate the expression using the given values.
+ 
x = 3 and y = -4
A. 1 B. -1 C. 2 D. 0
Solve the problem by using three variables.The largest angle of a triangle is 6 times the smallest angle and it is 3 times the other angle. Find the measure of the smallest angle.
A. 40° B. 20° C. 30° D. 10°