Plz help ill mark u brainliest

You paint a 1/2 of a wall in 1/4 hour. how long will it take you to paint one wall

Acar travels at an average speed of 56 miles per hour. how long does it take to travel 196 miles

Select the correct answer. what is the exact value of sin (157.5°)? a. 'sqrt(2 - sqrt(2))/2 b. *"-"'sqrt(2 + sqrt(2))/29 c.'sqrt(2 + sqrt(2))/4" d. "-"sqrt(2 + sqrt(2))/4)