What is 2x =5? Plz I need help?

20 solve 2(4 x + 3) < 5 x + 21. a) { x | x < 9} b) { x | x > -5} c) { x | x > -9} d) { x | x < 5}

Solve for x where 0 equation: cot^2x+2cotx+1=0

Suppose your sat score is 2040. a college with an average sat score for admintted students of which of these would most likely be your best option?