Please help me, Answer it correctly and properly. Thank you in advance!

Write the letters if it is a function.

How do i get the answer for 2/3 * 10/3

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.

What is the circumference of a circle with an area of 50.24 cm²?