1. Answer: 88 - b
Explanation: there are 88 birds and then some of flying away. We know b is just a substitute for an amount of birds so it’s 88 - b
2. Answer: 73 + d
Explanation: he is earning d, amount of dollars, so you have to add the amount of dollars, d, to your original amount, 73
3: Answer: 23 x g
Explanation: We have 23 miles. If the car goes 23 miles to a gallon and we have g gallons then we would multiply to find how far he can drive.