Graph the parabola or ellipse. Include the directrix that corresponds to the focus at the origin.r = 
A. 
B. 
C. 
D. 
Answer: D
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Solve the problem.Find the equation of the plane through the point P(-6, 5, 7) and perpendicular to the line 
A. 3x + 4y - z = 5 B. 3x + 4y - z = 14 C. 3x + 4y + z = -5 D. 3x + 4y - z = -5
Estimate the value of the quantity.The table shows the velocity of a remote controlled race car moving along a dirt path for 8 seconds. Estimate the distance traveled by the car using 8 subintervals of length 1 with right-end point values.
A. 160 in. B. 154 in. C. 170 in. D. 164 in.
Find the limit, if it exists.
A. 1/2 B. Does not exist C. 2 D. 1
Determine whether the argument in the problem below is valid or invalid. If valid, name the type of reasoning and if invalid, determine the error in reasoning. ? If I inherit $1,100, I will buy you a cookie. I inherit $1,100. Therefore, I will buy you a cookie. ?
A. valid; direct B. invalid; false chain C. invalid; indirect D. valid; indirect E. invalid; direct