Which transformations of ƒ(x) = 3x does h(x) = -3x - 7 represent?
reflection over the y-axis and shifted 7 units down
reflection over the x-axis and shifted 7 units down
reflection over the y-axis and shifted 7 units up
reflection over the x-axis and dilation by a factor of 3

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