If r(t) is the position vector of a particle in the plane at time t, find the indicated vector.Find the acceleration vector.r(t) = (9 cos t)i + (7 sin t)j
A. a = (9 cos t)i + (7 sin t)j
B. a = (-9 cos t)i + (-7 sin t)j
C. a = (-9 sin t)i + (-7 cos t)j
D. a = (9 sin t)i + (7 cos t)j
Answer: B
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Graph the function.y = - 
csc x
A. 
B. 
C. 
D. 
Use dimensional analysis to answer the question. Which weight is heavier? 9 ounces or 316.8 grams
A. They are the same weight. B. 9 ounces C. 316.8 grams
For the pictured triangles, they are:
(a) Congruent by SSS.
(b) Congruent by SAS.
(c) Congruent by ASA.
(d) Congruent by SSA.
(e) Congruent by AAA.
(f) Not necessarily congruent.
Find the standard form of the equation of a circle that satisfies the given conditions.Center (18, 17); touching the y-axis
A. (x - 18)2 + (y - 17)2 = 324 B. (x - 18)2 + (y - 17)2 = 18 C. (x - 17)2 + (y - 18)2 = 324 D. (x - 17)2 + (y - 18)2 = 18