Add or subtract, as indicated. Assume that all variables represent positive real numbers.
+ 
A. 2
B. 9
C. 3
D. 
Answer: A
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Using Green's Theorem, compute the counterclockwise circulation of F around the closed curve C.F = xyi + xj; C is the triangle with vertices at (0, 0), (10, 0), and (0, 7)
A. 
B. 0
C. 
D. - 
Solve the problem.Find the area of the triangle.
A. 36 in.2 B. 9 in.2 C. 72 in.2 D. 18 in.2
Sketch one complete cycle of the following function by first graphing the appropriate sine or cosine curve and then using the reciprocal relationships.
?
?
A. ?
B. ?
C. ?
?
D. ?
?
E. ?
?
Solve the problem.Andrea is having her yard landscaped. She obtained an estimate from two landscaping companies. Company A gave an estimate of $240 for materials and equipment rental plus $45 per hour for labor. Company B gave an estimate of $300 for materials and equipment rental plus $30 per hour for labor. Create a cost equation for each company where y is the total cost of the landscaping and x is the number of hours of labor. Determine how many hours of labor will be required for the two companies to cost the same.
A. 7 hr B. 4 hr C. 8 hr D. 3 hr