Solve.The formula S = A
models the value of a retirement account, where 
number of dollars added to the retirement account each year, 
annual interest rate, and 
value of the retirement account after t years. If the interest rate is 11%, how much will the account be worth after 40 years if $1000 is added each year? Round to the nearest whole
number.
A. $41,000
B. $646,827
C. $72,142
D. $2,665,036
Answer: B
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The point P on the unit circle that corresponds to a real number t is given. Find the indicated trigonometric function.
?Find sec t.
A. 
B. 
C. 
D. 
Use the graph to find the vertical asymptotes, if any, of the function.
A. y = -4, y = 4 B. x = 0, y = 0 C. x = 0 D. none
Solve the system of linear equations.
a. 
b. 
c. 
d. 
Solve the problem.The following table shows the median number of hours of leisure time that Americans had each week in various years.
(i) Use a graphing calculator to fit a quadratic sequence regression function an = an2 + bn + c to the data, where n is the number of years after 1973. (ii) Estimate the median number of leisure hours per week in 2000 and 2010. Round to the nearest hour.
A. (i) an = -0.021n2 + 1.44n + 28.07; (ii) 52 hours; 53 hours B. (i) an = 0.04n2 - 1.21n + 26.03; (ii) 23 hours; 36 hours C. (i) an = -0.04x2 + 1.21x + 26.03; (ii) 30 hours; 16 hours D. (i) an = 0.021x2 - 1.44x + 28.07; (ii) 4 hours; 4 hours