Determine if each set of lengths can be used to construct a triangle. if not, explain why not

Amir wants to proportionally increase the size of a photo to create a poster for his room. the size of the original photo is shown. complete the statement and then answer the question to represent ways that amir can increase the size of his photo.

For the feasibility region shown below find the maximum value of the function p=3x+2y

Which expression gives the exact value of x?