Help pls i am confused

What scale factor was applied to the first rectangle to get the resulting image interior answer as a decimal in the box

How many real and imaginary solutions does the equation x^2-3x=-2x-7 have?

1. there are 25 students who started computer programming in elementary school and 25 students who started computer programming in middle school. the first group had a mean final project grade of 95% and the second group had a mean final project grade of 92%. the line plot shows the differences after 10 rerandomizations. determine whether the difference in the means of the two groups is significant based on the line plot. explain your answer.