Answer:
Step-by-step explanation:
1.5
Opposite reciprocal of -2/3
Answer:

Step-by-step explanation:
Since 9 and c are multiplied together and the product is at most -28, the equation would have to be the one above.
Answer:
B) 20
Step-by-step explanation:
2808 lb. / 140 lb. ≈ 20
Try using PEMDAS,
Parentheses
Exponents
Multiplication
Division
Addition
Subtraction
So just do the problem in that order.