Answer:
Step-by-step explanation:
They are alike because both involve steps for multiplication and addition but part b uses factoring in its estimation to solve the problem while part c dosesn't.
Nina's truck holds more, because Brent's pick-up holds 1/5 a ton, and a ton is 2000 pounds, so 2000 x 1/5 is 400, and is less than Nina's truck.
Answer:

Step-by-step explanation:
The middle of the circle is at 4, -2, and r is 3
so
x + 4 + y + 2 = 3
combine like terms
x + y + 6 = 3
x + y = -3
square all the numbers

easy!