The floor of the canyon has an elevation of -14.5 feet. a rose and causes the elevation to change my -1.5 feet per year. how many years will it take for the canyon flawed have an elevation of -31 feet?

The radius of the earth is two times the radius of the moon. what fraction of the volume of the earth is the volume of the moon?

If the simple annual interest rate on a loan is 6, what is the interest rate in percentage per month?

72 the length of a side of a triangle is 36. a line parallel to that side divides the triangle into two parts of equal area. find the length of the segment determined by the points of intersection between the line and the other two sides of the triangle.