Find possible value(s) of ? in the interval [0°, 360°) with the given trigonometric function value.cos ? = 
A. 60°; 300°
B. 60°; 120°
C. 150°; 210°
D. 210°; 330°
Answer: A
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Write the number in scientific notation.0.000039519
A. 3.9519 × 10-5 B. 3.9519 × 105 C. 3.9519 × 10-4 D. 3.9519 × 104
Using the factoring method, solve for the roots of the quadratic equation.56x2 - 56x = 0
A. x = 1, x = 56 B. x = 0 C. x = 1 D. x = 1, x = 0
Choose the equation that matches the rational function graphed.
A. f(x) = 
B. f(x) = 
C. f(x) = 
D. f(x) = 
Solve the problem.A vendor sells hot dogs and bags of potato chips. A customer buys 4 hot dogs and 5 bags of potato chips for $16.75. Another customer buys 2 hot dogs and 3 bags of potato chips for $9.25. Find the cost of each item.
A. $2.25 for a hot dog; $2.00 for a bag of potato chips B. $2.00 for a hot dog; $1.75 for a bag of potato chips C. $2.00 for a hot dog; $2.00 for a bag of potato chips D. $1.75 for a hot dog; $2.00 for a bag of potato chips