Hi! I'm new to this but i need help on my Hw so can anyone help me?​

Which is the graph of f(x) = (4)x? image for option 1 image for option 2 image for option 3 image for option 4

Afarmer has a large field that is x feet in length. he wants to fence in a rectangular section in the middle of the field , leaving a length of 100 feet of open field behind each end of the fenced rectangle. he also wants the width of the fenced-in space to be 100 feet less than its length. find the expressions to represent the length and width of the fenced section of the field

What is the value of x in the equation7x+2y=48 when y=3