Find the determinant of the given matrix. (5 4) (8 - 2)= a) -42 b) -22 c) 22 d) 42

Can someone answer these problems for me

Which of the following is a proper fraction? a. 9⁄8 b. 5⁄6 c. 7⁄3 d. 4⁄2

The highest point on earth is the peak of mount everest if you climb to the top you would be approximately 29,035 feet above sea level at remembering that amount is 5280 feet percentage of the height of the mountain would you have to climb to reach a point 2 miles above sea level