Without graphing the function, determine its amplitude or period as requested.y = -3 sin 
xFind the amplitude.
A. 8?
B. 3
C. 
D. 
Answer: B
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Find any values of the variables that must be excluded.
A. a = 8 B. a = 8, a = 4 C. a = -8 D. Defined for all real numbers
Write an equation for the parabola.
A. (y - 2)2 = 12(x + 3) B. (x - 2)2 = 12(y + 3) C. (x + 3)2 = 12(y - 2) D. (x - 3)2 = 12(y + 2)
Solve the problem.Persons taking a 30-hour review course to prepare for a standardized exam average a score of 620 on that exam. Persons taking a 70-hour review course average a score of 781. Find a linear equation, in slope-intercept form, that relates the score, y, to the number of hours spent in the review course, x.
A. y = -4.025x + 499.25 B. y = 3.6225x - 503.25 C. y = 4.025x + 499.25 D. y = 3.6225x + 503.25
Determine whether the equation is quadratic.4x + 3 = 0
A. No B. Yes