Solve the problem.A summer camp wants to hire counselors and aides to fill its staffing needs at minimum cost. The average monthly salary of a counselor is $2400 and the average monthly salary of an aide is $1100. The camp can accommodate up to 35 staff members and needs at least 20 to run properly. They must have at least 10 aides, and may have up to 3 aides for every 2 counselors. How many counselors and how many aides should the camp hire to minimize cost?
A. 13 counselors and 16 aides
B. 19 counselors and 23 aides
C. 8 counselors and 12 aides
D. 13 counselors and 17 aides
Answer: C
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Identify the number as prime or composite.181
A. Prime B. Composite
Solve the problem.John and Tony start from the same place at the same time and head for a town 10 miles away. John walks twice as fast as Tony and arrives 3 hours before Tony. Find the speed of each.
A. Tony: 3 mph; John: 6 mph
B. Tony: 
mph; John: 
mph
C. Tony: 
mph; John: 
mph
D. Tony: 5 mph; John: 10 mph
In the figure, secants 
and 
intersect the circle at points R and S respectively. If m
= 36° and m
: m
= 4:1, find m
.
What will be an ideal response?
Solve the equation for the indicated variable. (Leave ± in your answer, when appropriate.)A = 
?r2 for r
A. r = 
B. r = ± 
C. r = ± 
D. r = 3