Find the principal unit normal vector N for the curve r(t).r(t) = (6 sin t)i + (6 cos t)j + 9k
A. N = (sin t)i + (cos t)j
B. N = (-sin t)i + (cos t)j
C. N = (-sin t)i - (cos t)j
D. N = (-cos t)i - (sin t)j
Answer: C
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Find the probability.80 tickets were sold at a raffle. If you have 6 tickets, what is the probability that you win if there is only one prize?
A. 
B. 
C. 
D. 
Which of the following is a defining theme of AP Statistics?
a. Exploring data b. Sampling and experimentation c. Anticipating patterns d. Statistical inference e. All of the above
Solve the problem.If a principle of P dollars is amortized over a period of t years, and payments are made each 
th of a year, with an annual interest rate of r (as a decimal), the payment p that must be made is given by the formula 
. The total interest I that will be paid during the term of a loan is given by 
Suppose $7000 is amortized over 6 years with an interest rate of 
style="vertical-align: -4.0px;" /> and requires monthly payments. What is the total interest that will be paid during the term of the loan? A. $894,001.05 B. -$12,306.40 C. -$4708.30 D. $2010.01
Use -? or ? where appropriate to describe the behavior at each zero of the denominator and identify all vertical asymptotes. g(x) = 
A. 
f(x) = -?; 
f(x) = ?; x = 6 is a vertical asymptote
B. 
f(x) = -?; 
f(x) = -?; x = 6 is a vertical asymptote
C. 
f(x) = ?; 
f(x) = -?; x = 0 is a vertical asymptote
D. 
f(x) = ?; 
f(x) = -?; x = 6 is a vertical asymptote