Painter rented a wallpaper steamer at 9 a. m. and returned it at 4 p. m. he paid a total of $28.84. what was the rental cost per hour?

9am to 4pm is 7 hours (10am, 11am, 12pm, 1pm, 2pm, 3pm, 4pm).

Divide $28.84 by 7 hours.

28.84/7 = 4.12

The rental cost per hour was $4.12.

40 i don’t know lololol

  or  

sin y = 7/q

7 is the opposite side length, q is the hypotenuse

tan y = 7/r

7 is the opposite side length, r is the adjacent side length

using sohcahtoa ^^^^

cos y = adjacent/hypotenuse

cos y = r/q