Solve the problem.A pendulum bob swings through an arc 40 inches long on its first swing. Each swing thereafter, it swings only 81% as far as on the previous swing. What is the length of the arc after 10 swings? Round to two decimal places.
A. 4.86 in.
B. 291.60 in.
C. 3.94 in.
D. 6.00 in.
Answer: D
Mathematics
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Solve the problem.Evaluate 
at (x, y, z) = (5, 5, 3) for the function u(p, q, r) = p2q2 - r; p = y - z, 
A. -384 B. -96 C. 320 D. -192
Mathematics
Solve the problem.The sales tax on a freezer is $21.15 and the sales tax rate is 6%. Find the total cost. Round to the nearest cent.
A. $373.65 B. $323.29 C. $444.15 D. $56.40
Mathematics
Find all real-number solutions. Round your answer to the second decimal place, if necessary. 2.7b3 - 52.3 = 156.9
A. 232.44 B. 4.26 C. 25.83 D. No real-number solution
Mathematics
Simplify the expression. Express the answer so that only positive exponents occur. Assume that all variables are positive.x5/8 ? x3/8
A. x15/64
B. 
C. x
D. x15/8
Mathematics