Given the function f(x)=-2x+x, find f(7)

Apackage of orgainc strwberries costs $1.50 while there in season and $2.25 when not in season what the percent increase

Astock has a 25% probability of increasing by $10 and a 75% probability of decreasing by $5. what is the stocks expected increase or decrease?

If you were constructing a triangular frame, and you had wood in the length of 4inches, 4 inches, and 7 inches, would it make a triangle? would you be able to create a frame from these pieces of wood?