The graph of the parabola defined by the equation $y=-(x+1)^2+1$ is shifted 1 unit to the right, then shifted 5 units down, then rotated 180 degrees about its vertex. the resulting parabola has zeros at $x=a$ and $x=b$, where $b\ge a$. what is $b-a$?

The sixth grade art students are making a mosaic using tiles in the shape of right triangles.each tile has leg measures of 3 centimeters and 5 centimeters.i f there are 200 tiles in the mosaic what is the area of the mosaic.

The number of potato chips in a bag is normally distributed with a mean of 71 and a standard deviation of 2. approximately what percent of bags contain between 69 and 73 potato chips? approximately 68% approximately 71% approximately 95% approximately 99.7%

Adj has a total of 1075 dance and rock songs on her system. the dance selection is 4 times the size of the rock selection. write a system of equations to represent the situation.