A rectangle has a height of a²+3 and a width of a²+2a+5

Given abcd ac=38 and ae=3x+4 find the value of x

For f(x)=2x+3 and g(x)=x^2- 8 find (f+g) (x)

Ametal rod needs to be 9 feet and 5.5 inches in length. the sections of the poles being used are each 1 foot and 10.5 inches long. how many 1ft 10.5in sections would be needed to complete the 9ft 5.5in metal rod? and how many inches of material will be left?