Answer:
B and D.
Step-by-step explanation: Just took the test.
Answer: 60
Step-by-step explanation:
Always take care of what is in ( ) and [ ] first
28 - 2
26 + 4
30(2) i assume you are multiplying it?
60
Answer:
B
Step-by-step explanation:
40 flights if you're asking how many flights happen in 1 hour.