Without using a calculator, determine the system of inequalities needed for the calculator-generated graph.
A. x2 + y2 ? 16
x ? 0
B. x2 + y2 ? 16
x ? 0
C. x2 + y2 ? 16
x ? 0
D. x2 + y2 ? 16
y ? 0
Answer: B
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Identify the cut edges in the graph or say there are none.
A. DE, EF, and DF B. None C. BD, CE, and FI D. AB, AC, CH, BG, GI, and HI
Solve the right triangle using the information given. Round answers to two decimal places, if necessary. 
a = 4, c = 8; Find b, A, and B.
A. b = 6.93 A = 30° B = 60° B. b = 8.94 A = 30° B = 60° C. b = 6.93 A = 60° B = 30° D. b = 8.94 A = 31° B = 59°
Solve the system as matrix equations using inverses.There were 340 people at a play. The admission price was $2 for adults and $1 for children. The admission receipts were $490. How many adults and how many children attended?
A. 95 adults and 245 children B. 122 adults and 218 children C. 150 adults and 190 children D. 190 adults and 150 children
Rewrite with positive exponents, and simplify, if possible.
A. 7xy1/5
B. 
C. 
D. 7xy5