Given points a(0,3) b(-1,4) c(2,-1). what is coordinate b’ if the figure is rotated counter-clockwise 90 degrees? a• (4,-1) b• (-4,-1) c• (4,1) d• (1,-4)

The answer is (C) (4,1).

Step-by-step explanation:  Given points are A(0,3), B(-1,4) and C(2,-1). Obviously, these points will form a triangle. We need to find the co-ordinates of the point B', which is formed after rotating the figure counter-clockwise 90 degrees.

The point B(-1,4) lies in the second quadrant. After rotating 90 degrees counter-clockwise, the this point will lie in the first quadrant. So, both the x-coordinate and y-coordinate will be positive. Also, the two coordinates will exchange. Please see the attached figure.

Thus, the coordinates of point B' are (4,1).

Hence, (C) is the correct option.

10000

step-by-step explanation: divide by 2,

9 sandwiches per hour

step-by-step explanation:

when we have a rate, we want a 1 in the denominator

27/3 = 9

27 sandwiches/ 3 hours = 9 sandwiches/hour