In an aquarium,2/5 of fish are surgeon. of these ,3/4 are yellow tangs. what fraction of all fish in the aquarium are yellow tangs

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

The figures below are made out of circles, semicircles, quarter circles, and a square. find the area and the perimeter of each figure and give your answers as a completely simplified exact value in terms of π (no approximations).

Can some one explain how to slove specifically, what is the value of x? 0.9(x+1.4)-2.3+0.1x=1.6 enter the answer as a decimal in the box. x= ?