Graph the polar equation.r = 
Identify the directrix and vertices. 
A. directrix: 6 unit(s) below
the pole at y = -6
vertices: 
, 
B. directrix: 6 unit(s) to the right of
the pole at x = 6
vertices: 
, 
C. directrix: 6 unit(s) above
the pole at y = 6
vertices: 
, 
D. directrix: 6 unit(s) to the left of
the pole at x = -6
vertices: 
, 
Answer: A
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Provide an appropriate response.Find the direction in which the function is increasing most rapidly at the point P0.f(x, y, z) = x
, P0(1, 1, 1)
A. 
B. 
C. 
D. 
Solve the problem.
The graph shows the amount of water in a 200-gallon tank after x minutes have elapsed. (i) Is the water entering or leaving the tank? (ii) Find the x-intercept and the y-intercept.
A. Entering; x-intercept is 200 and y-intercept is 0 B. Leaving; x-intercept is 0 and y-intercept is 200 C. Leaving; both intercepts are 0 D. Entering; both intercepts are 0
Evaluate the expression for the given replacement values.x - y
for x = -3, y = -21
A. 24 B. -24 C. -18 D. 18
Determine if the ordered pair is a solution to the given linear inequality in two variables.x + 2y > -10
(1, -5)
A. Yes B. No