Determine the amplitude or period as requested.Amplitude of y = -2 sin x
A. -2?
B. 2
C. 
D. 2?
Answer: B
Mathematics
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Solve.How many lines are determined by 18 points, no 3 of them being collinear?
A. 18 B. 153 C. 2448 D. 306
Mathematics
Solve the equation.0.4x - 0.2(40 + x) = -0.05(40)
A. {20} B. {15} C. {40} D. {30}
Mathematics
Solve the problem.Write an equation for the tangent line to the curve 
at the point 
A. x - 2y + 19 = 0
B. x - 2
y + 1 = 0
C. x - 2
y + 19 = 0
D. x - 2y + 1 = 0
Mathematics
Solve the problem.Under your new job contract, you will earn $22.50 per hour for the next 2 years. Assuming that you keep this job and work 40 hours per week, 52 weeks per year, what will your total gross earnings be over the next 2 years?
A. $93,500 B. $93,700 C. $83,600 D. $93,600
Mathematics