Find 
using implicit differentiation.
?
?
A. 
B. 
C. 
D. 
E. 
Answer: E
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The position vector of a particle is r(t). Find the requested vector.The velocity at t = 0 for r(t) = ln(t3 - 5t2 + 5)i - 
j - 2cos(t)k
A. v(0) = - 
j
B. v(0) = 
j
C. v(0) = 
i - 
j
D. v(0) = 
i - 
j + 2k
Solve the problem.Suppose that Janine desires 46 grams of protein and 38 grams of dietary fiber daily. One serving of kidney beans has 8 grams of protein and 6 grams of dietary fiber. One serving of refried pinto beans has 6 grams of protein and 6 grams of dietary fiber. If a serving of kidney beans costs $0.45 and a serving of refried pinto beans costs $0.35, then how many servings of each should Janine eat to minimize cost and still meet her requirements? Fractional servings are allowed.
A. 4 servings of refried pinto beans and 
servings of kidney beans
B. 
servings of kidney beans and 0 servings of refried pinto beans
C. 
servings of refried pinto beans and 0 servings of kidney beans
D. 
servings of refried pinto beans and 4 servings of kidney beans
Find the quotient.
A. 
+ 
- 
B. 
+ 
- 
C. 
+ 
- 
D. 
+ 
- 
Solve the problem.A stone thrown downward with an initial velocity of 34.3 m/sec will travel a distance of s meters, where 
and t is in seconds. If a stone is thrown downward at 34.3 m/sec from a height of 382.2 m, how long will it take the stone to hit the ground? Round your answer to the nearest second.
A. 13 sec B. 7 sec C. 6 sec D. 19 sec