Find a ? b.a = 
, b = 
A. 
B. -1
C. 31
D. 
Answer: C
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Find the mode or modes for the set of numbers.77, 25, 77, 13, 25, 29, 56, 77
A. 42.5 B. 77 C. 47.4 D. 25
Find VC if C = 10 æF, R = 82 Kê, and t = 1 msec after being connected to a 5 V source.
a. 6 mV b. 61 mV c. 2.1 V d. 2.9 V e. 3.8 V
Graph.x = 1
A. 
B. 
C. 
D. 
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. 8 counselors and 12 aides B. 13 counselors and 16 aides C. 13 counselors and 17 aides D. 19 counselors and 23 aides