Can someone please help me with question 7 and 8 show work

What is the point-slope equation of a line with slope -5 that contains the point (6,3)

The perimeter of a rectangular lot of land is 436 ft. this includes an easement of x feet of uniform width inside the lot on which no building can be done. if the buildable area is 122 ft by 60 ft, determine the width of the easement. select one: a. 9 feet b. 18 feet c. 4.5 feet d. 7 feet

Use the quadratic function to predict f(x) if x equals 8. f(x) = 25x2 − 28x + 585