Answer:

Step-by-step explanation:
Given expression:

Remove parentheses:

Collect like terms:

Combine like terms:

Answer:
1. Anne = 21 Bobby=35, 450, 70+40+30=140
Step-by-step explanation:
- 1 21÷3=7
- 7×5=35
- 7-2=250
- 5=250
- 1=50
- 2×50+7×50=100+350=450
- 450
- we can see that it's multiplied by 10, so 70+40+30=140
Total wings = 2*(# of birds with 2 wings) +(# of birds with one wing) +(# of wings on critters that are not birds) +(# of wings not on critters)
49.38 to the nearest tenth is 49.4
Hope I helped!