Solve.For maximum benefit during exercise, one's heart rate should increase by 50% to 85% above resting heart rate. (a) Alice has a resting heart rate of 70 bpm (beats per minute). What would her heart rate be if she increased it by 80% during exercise? (b) Sahill, who has a resting heart rate of 68 bpm , increased it to 119 bpm. By what percent did he increase his resting heart rate?
A. (a) 126 bpm,
(b) 85%
B. (a) 116 bpm,
(b) 85%
C. (a) 116 bpm,
(b) 75%
D. (a) 126 bpm,
(b) 75%
Answer: D
Mathematics
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j - 2k
A. 
(j - k)
B. 
C. 
D. 
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A. 
B. 
C. 
D. 
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Solve the inequality.
? 0
A. (-?, -9) or [-3, 5) or [11, ?) B. (-?, -9) or [-3, 0) or (0, 5) or [11, ?) C. (-?, -9) or [11, ?) D. (-9, -3] or (5, 11]
Mathematics
Solve the right triangle shown in the figure. 
= 3.9 cm, 
= 1.9 cm, ?C = 90°
A. ?A = 29°, ?B = 61°, 
= 5.8 cm
B. ?A = 64°, ?B = 26°, 
= 4.3 cm
C. ?A = 60°, ?B = 30°, 
= 4.3 cm
D. ?A = 26°, ?B = 64°, 
= 4.3 cm
Mathematics