Let sin(2x)-sin(x)=0,where 0<x<2pi. what are the possible solutions for x? a. {pi/6,5pi/6}
b. {pi/3, 5pi/3}
c. {pi/6,pi/2,5pi/6,3pi/2}
d. {0,pi/3,pi,5pi/3}

The vertex of this parabola is at (-2,-3). when the x-value is -1, the y-value is -5. what is the coefficient of the squared expression in the parabola's equation?

Edger needs 6 cookies and 2 brownies for every 4 plates how many cookies and brownies does he need for 10 plates

Anew obstacle course is home to several new types of challenging obstacles. one such obstacle is traversing a 15-stair staircase. to make it more challenging, the stairs are not uniformly spaced. rather, the vertical space between consecutive stairs for the first 10 stairs is 113 feet and the vertical space for the last 5 stairs is 134 feet. what is the total vertical distance traveled ascending and descending the entire 15-stair staircase?