I NEED HELP PLEASE! :)

What is the exact volume of a sphere whose diameter is 14 cm? Show your work.

Which describes the difference between the graph of f(x)=x^2 and g(x)=-(x^2-2)

What is the value of the expression i 0 × i 1 × i 2 × i 3 × i 4? 1 –1 i –i

Liz is shipping a package to her friend. the maximum weight of a medium flat-rate box is 20 pounds, including the box which weighs 6 ounces. write and solve an inequality to describe the possible weight in pounds, w, of the contents that liz will ship to her friend if she must use a medium flat-rate box. use the drop-down menus to explain your answer.