Please help i am rubbish at maths

The border line of the linear inequality 4x + 7y < 5 is dotted true or false?

Afunction, f(x), represents the height of a plant x months after being planted. students measure and record the height on a monthly basis. select the appropriate domain for this situation. a. the set of all positive real numbers b. the set of all integers oc. the set of all positive integers od. the set of all real numbers reset next

Someone which statements are true? check all that apply.