Answer:
A. No, this is not a valid inference because he asked only 20 families
Step-by-step explanation:
You cannot assume that those are the only families that would want to go; you have to ask all the families.
A. Helen is driving 65 mph
b. Matthew drove 310 miles
(2x+3)*4 is less than or equal to 10. For x, the number, you would get x is greater than or equal to -1/4.
The answer for this question will be c. 28 square units.