Solve the problem.Khang and Hector live 72 miles apart in southeastern Missouri. They decide to bicycle towards each other and meet somewhere in between. Hector's rate of speed is 60% of Khang's. They start out at the same time and meet 5 hours later. Find Hector's rate of speed.
A. 45 mph
B. 9 mph
C. 72 mph
D. 5.4 mph
Answer: D
Mathematics
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Use a proportion to solve the problem.The ratio of the lengths of strings that play the notes D and B is 27 to 16. If a string 96 centimeters long plays a B, what is the length of the string that plays a D?
A. 123 centimeters B. 112 centimeters C. 162 centimeters D. 178 centimeters
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Give the reciprocal of the given number.
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?
A. 
B. 
C. 
D. 
E. 
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For the given functions f and g, find the requested composite function.f(x) = -6x + 9, g(x) = 2x + 3;
Find (g ? f)(x).
A. -12x - 15 B. -12x + 21 C. -12x + 27 D. 12x + 21
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Graph the inequality.x2 < 25 + y2
A. 
B. 
C. 
D. 
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