Which of the following is true for f(x) = -2sin(x)-1? *

The amplitude is 2
The period is 180 degrees
The midline is y = 1
The amplitude is -2

In the equations, a and b represent the price per night for a room in hotel a and hotel b, respectively, w weeks after september 1 last autumn. what was the price per night in hotel a when it was equal to the price per night in hotel b? a = 240 − 20w b = 320 − 30w

Which represents the solution set of the inequality 5x-9 < 21? a. x < 12/5 b. x > 12/5 c. x > 6 d. x < 6

Simplify the expression. -2/5(10+15m-20n)