Division between a decimal and a fraction. (Please help me, math is my worst subject)

If c(x) = 4x – 2 and d(x) = x2 + 5x, what is (cxd)(x)

Extra points! find the missing dimension! need asap

Anew landowner is interested in constructing a fence around the perimeter of her property. her property is 1,080√30 feet wide and 500√20 feet long. what is the perimeter of the property? (recall that the perimeter is the sum of each side of a shape or boundary). a 1,580√40 feet b. 5,320√5 feet c. 3,160√20 feet d. 10,640√5 feet