Help me with all 4 please! :(

Which of the following circles have their centers in the third quadrant? check all that apply.

Which statement best describes how to determine whether f(x) = x squared- x +8 is an even function ?

Emily convinced her mom to buy a giant box of her favorite cereal. her mom doesn't think the box will fit on their shelf. the volume of the box is 1000 cm^3 . the base of the box is 25 cm by 10 cm