What does the circuit symbol in the figure mean?
?
?
A. AND-gate
B. NOT-gate
C. Switch
D. Battery
E. OR-gate
Answer: E
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Evaluate the integral by using multiple substitutions.
dy
A. 6 sin2 
+ C
B. 
cos4 
+ C
C. 
sin4 
+ C
D. 2 sin4 
+ C
Solve the problem.The size P of a small herbivore population at time t (in years) obeys the function 
if they have enough food and the predator population stays constant. After how many years will the population reach 1400?
A. 12.16 yrs B. 10.58 yrs C. 40.94 yrs D. 4.33 yrs
Find an equation for the line with the given properties.The solid line L contains the point (1, 4) and is perpendicular to the dotted line whose equation is 
Give the equation of line L in slope-intercept form.
A. y - 4 = 2(x - 1)
B. y = - 
x + 
C. y - 4 = - 
(x - 1)
D. y = 
x + 
Solve the problem.An automotive glass plant must be able to fill orders for 230 truck windshields, 350 auto windshields, and 310 RV windshields. Because the first shift crews are more experienced, they are each able to make 7 truck windshields, 12 auto windshields, and 9 RV windshields. The second shift crews are able to produce 4 truck windshields, 12 auto windshields, and 7 RV windshields. The more experienced first shift crews cost the company $360.00 per crew per shift and the second shift crews each cost $310.00 per shift. The company's facilities will handle at most 50 crews on each shift, and they must have at least 10 crews come in to keep the plant running. How many first shift and how many second shift crews should they schedule to minimize costs?
A. 51 first shift crews and 17 second shift crews B. 43 first shift crews and 24 second shift crews C. 28 first shift crews and 10 second shift crews D. 37 first shift crews and 36 second shift crews