Solve the system by the substitution method. If there is no solution or an infinite number of solutions, so state. Use set notation to express the solution set.
A. {(8, 7)}
B. {(8, 6)}
C. {(7, 7)}
D. no solution; ?
Answer: B
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Find the slope of a line tangent to the given curve at the given point.y = 
; x = 0.86 (Round the nearest hundredth.)
A. -1.51 B. 0.08 C. -1.59 D. -4.05
Find the slope of the line containing the two points.(7, -2); (-9, -2)
A. 
B. 0
C. -16
D. undefined
Answer the following statement(s) true (T) or false (F)
1. If two triangles are congruent, then there are exactly three pairs congruent parts—the corresponding angle pairs. 2. In ?ABC, if then ?BAC ? ?ACB. 3. If AB , ? XY, BC ? YZ and ?ABC ? ?XYZ then ?ABC ? ?XYZ 4. In ?ABC, ?ABC ? ?CBA by corresponding parts (C.P.) 5. If PQ bisects AB,then AP ? BP.
Find the derivative of the function.f(x) = (6x - 2)(5x + 7)2
A. f'(x) = 6(5x + 7)+ 10(6x - 2)(5x + 7)2 B. f'(x) = 60(6x - 2)(5x + 7)2 C. f'(x) = 6(5x + 7)2 + 10(6x - 2)(5x + 7) D. f'(x) = 6(5x + 7)2 + 2(6x - 2)(5x + 7)