Help me please thank you I put a lot of points on here :)

Can you answer my question? will mark brainiest!

What number line represents the solution set for the inequality -1/2 greater than or equal to 4

Tony is charged $ 50 and additional $0.15 per miles for renting a car. a) represent the cost of renting a car with an equation, and the determine the cost if he drove it70 miles. b) what would be the cost of a car rental if the car was driven 250 miles? show work