Find the indicated angle.Identify the pair or pairs of complementary angles.
A. ?DBE and ?EBF
B. ?ABD and ?EBF; ?DBE and ?FBC
C. ?ABD and ?FBC
D. ?ABD and ?FBC; ?DBE and ?EBF
Answer: D
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Solve the problem.The expression 0.60(220 - a - r) + r is used to obtain the target heart rate for a cardiovascular workout for a nonathletic male with age a and resting heart rate r. The accompanying table shows the target heart rate for a 23-year-old nonathletic female for various resting heart rates. Find the missing entries. 
A. 144.2; 146.2; 148.2 B. 147.8; 149.8; 151.8 C. 135.2; 137.2; 139.2 D. 222.2; 230.2; 238.2
Solve the problem.Midtown Delivery Service delivers packages which cost $1.40 per package to deliver. The fixed cost to run the delivery truck is $384 per day. If the company charges $5.40 per package, how many packages must be delivered daily to make a profit of $40?
A. 96 packages B. 56 packages C. 274 packages D. 106 packages
Determine whether the statement is true or false.|-8 - 5| = 8 - 5
A. True B. False
Find an explicit rule for the nth term of the sequence.The second and fifth terms of a geometric sequence are 5 and 625, respectively.
A. an = 1 ? 5n+1 B. an = 1 ? 5n+3 C. an = 1 ? 5n-2 D. an = 1 ? 5n-1