Answer:
bottom lock: 30lb. top lock: 66
Step-by-step explanation:
the x=9 and the y=3 so do order of operations. (9x2)+(3x4), then 18+12=30. 30lb. is the first lock. then do (9x3)+9+30. the second lock is 66.
see explanation
4a + 8 4
2a² + 8a 2a
12a² - 8a 4a
4 - 6a 2
A
16+3:19
11+8:19
19=19
bottom left :)
