How many soultions? x + 3 = 2x - 18

A single solution
Infinite solutions
No solution?

Given this information, which expression must represent the value of b?

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

On a piece of paper graft y+2> -3x-3 then determine which answer matches the graph you drew