How many significant digits are there in 074.0030

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

Rectangle leg this 11feet and perimeter of 38feet what is the width of the rectangle in feet

Consider the function f(x)=-5x+3 what is f(-2)