Ava wants to paint two walls in her room blue. both walls are 9 feet tall and 12 feet long. one wall has a 3 foot by 2 foot window and the other wall has a 3 foot by 7 foot door. what is the combined area of the two walls ava wants to paint?

a. 189 ft2
b. 210 ft2
c. 216 ft2
d. 243 ft2

The answer is 189ft2 because you multiply 9 times 12, which equals 108. And since you have 2 walls, you add 108 by 108 which is 216. Then multiply 3 and 7 which is 21 to get the area of the window and 3 by 2 which is 6 to get the other window. Then, add 21 and 6 to get 27. Lastly, minus 216 by 27 to get 189, which is your answer.

 5.22 seconds

Step-by-step explanation:

t represents time and y represents the height.

Since we want to know when the ball hits the ground, find t when y = 0

Ball 1 starts at a height of 109 --> h = 109

0 = -16t² + 109

16t² = 109

   

   

   

   t = 5.22