Answer:
the difference is -6
Step-by-step explanation:
number=6
square=2x
2x-6
The number is x. Difference means subtract. from indicates what is behind the minus sign
6 comes first
then the minus signs
x is squared and becomes x^2
difference is 6 - x^2
They will deliver on the same day again 21 days later
Multiples of 3 and 7
3: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30
7: 7, 14, 21, 28, 35, 42, 49
