At a concession​ stand, seven hot dog(s) and four hamburger(s) cost ​$19.50​; four hot dog(s) and seven hamburger(s) cost ​$21.75. Find the cost of one hot dog and the cost of one hamburger.

One line passes through (-7,-4) and (5,4) . another line passes through the point (-4,6) and (6,-9)

Find the x-intercepts of the parabola withvertex (1,1) and y-intercept (0,-3).write your answer in this form: (x1,if necessary, round to the nearest hundredth.

Match the scale and the actual area to the area of the corresponding scale drawing. scale: 1 inch to 4 feet actual area: 128 square feet scale: 1 inch to 7 feet actual area: 147 square feet scale: 1 inch to 8 feet actual area: 256 square feet scale: 1 inch to 5 feet actual area: 225 square feet area of scale drawing scale and actual area scale drawing area: 3 square inches arrowright scale drawing area: 8 square inches arrowright scale drawing area: 4 square inches arrowright scale drawing area: 9 square inches arrowright