Abu donated 10% of his savings to build a mosque and gave 30% of the rest of his savings to his son. What percentage of his savings has he remaining ? (A) 27%
(B) 37%
(C) 60%.
(D) 63%

Let the mean of the population be 38 instances of from 6" - 9" hatchings per nest, and let the standard deviation of the mean be 3. what sample mean would have a confidence level of 95% or a 2.5% margin of error?

Which of the following points is collinear with (-2,1) and (0,3)

1. find the area of the unshaded square 2. find the area of the large square 3. what is the area of the frame represented by the shaded region show