Find the X intercept my intercept of the graph of the equation

7X plus 3Y equals 21

Brook states that the distance on the line is 4 units. caleb states that the whole line does not have a distance because it continues on forever. vivian states that the line is 6 units long. which distance did brook measure? which distance did vivian measure?

Can someone me with the property questions for 12 13 and 14 plz

At 6 1/2 cents per pound of string beans how much does 7 pounds cost