Which equation can be used to find the length of abc

Find the domain and range of the following function f(x) = 51x - 21+ 4

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 are two numbers that add up to -9 and multiply to -10 best answer gets branliest and 100 extra points