help I need it right now

1. Find the point on the line if = x nearest to the point ( 4, 1). 2. A rectangular lot adjacent to a highway is to be enclosed by a fence. If the fencing costs P250 per foot along the highway and P150 per foot on the other sides, find the dimensions of the largest lot that can be fence off for P72 000. 3. What is the equation of the normal to the curve x:I + y2 = 25 at ( 4,3 l. 4. Find the angle that the line 2y 9x 18 = 0 makes with the x - axis . 5. A cylindrical steam broiler is to be constructed having a capacity of 1000 mm. The material for the sides cost P 2000 per square meter and for the ends P 3000 per square meter. Find the radius so that the cost is minimum