A hybrid car was driven 300 mi and used 6 gal of gasoline. At the same rate of consumption, how far would the hybrid car travel on 11.5 gal of gasoline?

21 a stick 7 inches long is broken into two pieces, so that one piece is twice as long as the other one. how long are the two pieces?

Step by step explanation pls for 10 pts the length of a rectangular board is 3 feet less than twice its width. a second rectangular board is such that each of its dimensions is the reciprocal of the corresponding dimensions of the first rectangular board. if the perimeter of the second board is one-fifth the perimeter of the first, what is the perimeter of the first rectangular board?  

If f(x) = -2x2 - 3 and g(x) = 3x - 4, then f(g(2))=