Solve the system by either elimination or substitution. Verify your work by using "intersect" on your graphing calculator of by checking that your result satisfies both equations of the system.
A. all points on the line 2x + 3y = 16; dependent system
B. empty set solution; inconsistent system
C. (-3.2, 12.8)
D. (12.8, -3.2)
Answer: D
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Graph the inequality.2x + 5y ? -10
A. 
B. 
C. 
D. 
Multiply the polynomials. Express the answer as a single polynomial in standard form.(10x - 11)2
A. 100x2 - 220x + 121 B. 10x2 - 220x + 121 C. 10x2 + 121 D. 100x2 + 121
Solve the problem.Bob owns a watch repair shop. He has found that the cost of operating his shop is given by 
where c is cost and x is the number of watches repaired. How many watches must he repair to have the lowest cost?
A. 29 watches B. 40 watches C. 20 watches D. 59 watches
Find the requested function.Find the polynomial function with leading coefficient 4 ; degree 4; and -4, -1, 0, and 
as zeros.
A. f(x) = 4x4 - 17x3+ x2 -12 B. f(x) = 4x4 - 17x3+ 5x2 +15x C. f(x) = 4x4 + 17x3+ x2 -12x D. f(x) = 4x4 + 11x3- 8x2 -16x